Item 1. Financial Statements

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Item 1. Financial Statements

Aon plc

Condensed Consolidated Statements of Income

(Unaudited)


	Three Months Ended June 30,				Six Months Ended June 30,
(millions, except per share data)	2025		2024		2025		2024
Revenue
Total revenue	$	4,155	$	3,760	$	8,884	$	7,830
Expenses
Compensation and benefits	2,360		2,130		4,609		4,013
Information technology	136		132		272		256
Premises	85		82		167		153
Depreciation of fixed assets	47		45		93		89
Amortization and impairment of intangible assets	201		128		400		144
Other general expense	373		455		819		803
Accelerating Aon United Program expenses	94		132		204		251
Total operating expenses	3,296		3,104		6,564		5,709
Operating income	859		656		2,320		2,121
Interest income	—		31		5		59
Interest expense	(212)		(225)		(418)		(369)
Other income (expense)	56		236		46		311
Income before income taxes	703		698		1,953		2,122
Income tax expense	109		160		377		491


Net income	594		538		1,576		1,631
Less: Net income attributable to redeemable and nonredeemable noncontrolling interests	15		14		32		36
Net income attributable to Aon shareholders	$	579	$	524	$	1,544	$	1,595

Basic net income per share attributable to Aon shareholders	$	2.68	$	2.47	$	7.14	$	7.75



Diluted net income per share attributable to Aon shareholders	$	2.66	$	2.46	$	7.10	$	7.72



Weighted average ordinary shares outstanding - basic	216.2		212.5		216.3		205.8
Weighted average ordinary shares outstanding - diluted	217.3		213.3		217.6		206.7

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)


	Three Months Ended June 30,				Six Months Ended June 30,
(millions)	2025		2024		2025		2024
Net income	$	594	$	538	$	1,576	$	1,631
Less: Net income attributable to redeemable and nonredeemable noncontrolling interests	15		14		32		36
Net income attributable to Aon shareholders	579		524		1,544		1,595
Other comprehensive income (loss), net of tax:
Change in fair value of financial instruments	10		1		13		76
Foreign currency translation adjustments	604		(88)		843		(220)
Postretirement benefit obligation	(1)		13		46		39
Total other comprehensive income (loss)	613		(74)		902		(105)
Less: Other comprehensive income attributable to noncontrolling interests	—		—		—		—
Total other comprehensive income (loss) attributable to Aon shareholders	613		(74)		902		(105)
Comprehensive income attributable to Aon shareholders	$	1,192	$	450	$	2,446	$	1,490

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Financial Position


	(Unaudited)
(millions, except nominal value)	June 30, 2025		December 31, 2024
Assets
Current assets
Cash and cash equivalents	$	1,008	$	1,085
Short-term investments	379		219
Receivables, net	4,905		3,803
Fiduciary assets	20,677		17,566
Other current assets	854		759

Total current assets	27,823		23,432
Goodwill	16,024		15,234
Intangible assets, net	6,733		6,743
Fixed assets, net	664		637
Operating lease right-of-use assets	735		711
Deferred tax assets	861		654
Prepaid pension	598		556
Other non-current assets	572		998

Total assets	$	54,010	$	48,965

Liabilities, redeemable noncontrolling interests, and equity
Liabilities
Current liabilities
Accounts payable and accrued liabilities	$	2,294	$	2,905
Short-term debt and current portion of long-term debt	1,837		751
Fiduciary liabilities	20,677		17,566
Other current liabilities	2,267		1,773

Total current liabilities	27,075		22,995
Long-term debt	15,451		16,265
Non-current operating lease liabilities	705		685
Deferred tax liabilities	363		319
Pension, other postretirement, and postemployment liabilities	1,078		1,127
Other non-current liabilities	1,249		1,144

Total liabilities	45,921		42,535

Redeemable noncontrolling interests	81		125

Equity
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2025 - 215.7; 2024 - 216.0)	2		2
Additional paid-in capital	13,258		13,173
Accumulated deficit	(1,574)		(2,309)
Accumulated other comprehensive loss	(3,843)		(4,745)
Total Aon shareholders' equity	7,843		6,121
Nonredeemable noncontrolling interests	165		184
Total equity	8,008		6,305
Total liabilities, redeemable noncontrolling interests and equity	$	54,010	$	48,965

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Shareholders’ Equity

(Unaudited)


(millions)	Shares	Ordinary Shares and Additional Paid-in Capital		Accumulated Deficit		Accumulated Other Comprehensive Loss, Net of Tax		Non- redeemable Non- controlling Interests		Total


Balance at January 1, 2025	216.0	$	13,175	$	(2,309)	$	(4,745)	$	184	$	6,305
Net income (1)	—	—		965		—		21		986
Shares issued - employee stock compensation plans	0.7	(111)		—		—		—		(111)
Shares repurchased	(0.6)	—		(250)		—		—		(250)
Share-based compensation expense	—	147		—		—		—		147
Dividends to shareholders ($0.675 per share)	—	—		(146)		—		—		(146)
Net change in fair value of financial instruments	—	—		—		3		—		3
Net foreign currency translation adjustments	—	—		—		239		—		239
Net postretirement benefit obligation	—	—		—		47		—		47

Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(14)		(14)
Remeasurement of redemption value of redeemable noncontrolling interest	—	(11)		—		—		—		(11)
Balance at March 31, 2025	216.1	$	13,200	$	(1,740)	$	(4,456)	$	191	$	7,195
Net income (2)	—	—		579		—		14		593

Shares issued - employee stock compensation plans	0.3	(49)		(1)		—		—		(50)
Shares repurchased	(0.7)	—		(250)		—		—		(250)
Share-based compensation expense	—	119		—		—		—		119
Dividends to shareholders ($0.745 per share)	—	—		(162)		—		—		(162)
Net change in fair value of financial instruments	—	—		—		10		—		10
Net foreign currency translation adjustments	—	—		—		604		—		604
Net postretirement benefit obligation	—	—		—		(1)		—		(1)
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—	(9)		—		—		—		(9)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(40)		(40)

Remeasurement of redemption value of redeemable noncontrolling interest	—	(1)		—		—		—		(1)
Balance at June 30, 2025	215.7	$	13,260	$	(1,574)	$	(3,843)	$	165	$	8,008

(1)The Company’s Net income totaled $982 million for the quarter ended March 31, 2025, which included $4 million of Net loss related to redeemable noncontrolling interests.

(2)The Company’s Net income totaled $594 million for the quarter ended June 30, 2025, which included $1 million of Net gain related to redeemable noncontrolling interests.


(millions)	Shares	Ordinary Shares and Additional Paid-in Capital		Accumulated Deficit		Accumulated Other Comprehensive Loss, Net of Tax		Non-redeemable Non- controlling Interests		Total
Balance at January 1, 2024	198.6	$	6,946	$	(3,399)	$	(4,373)	$	84	$	(742)
Net income	—	—		1,071		—		22		1,093
Shares issued - employee stock compensation plans	0.8	(104)		—		—		—		(104)
Shares repurchased	(0.8)	—		(250)		—		—		(250)
Share-based compensation expense	—	130		—		—		—		130
Dividends to shareholders ($0.615 per share)	—	—		(122)		—		—		(122)
Net change in fair value of financial instruments	—	—		—		75		—		75
Net foreign currency translation adjustments	—	—		—		(132)		—		(132)
Net postretirement benefit obligation	—	—		—		26		—		26
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—	(1)		—		—		—		(1)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(1)		(1)
Balance at March 31, 2024	198.6	$	6,971	$	(2,700)	$	(4,404)	$	105	$	(28)
Net income (1)	—	—		524		—		12		536
Shares issued - NFP Transaction	19.0	5,882		—		—		—		5,882
Shares issued - employee stock compensation plans	0.4	(45)		—		—		—		(45)
Shares repurchased	(0.8)	—		(250)		—		—		(250)
Share-based compensation expense	—	117		—		—		—		117
Dividends to shareholders ($0.675 per share)	—	—		(148)		—		—		(148)
Net change in fair value of financial instruments	—	—		—		1		—		1
Net foreign currency translation adjustments	—	—		—		(88)		—		(88)
Net postretirement benefit obligation	—	—		—		13		—		13
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—	—		—		—		86		86
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(35)		(35)
Adjustments to redeemable noncontrolling interests	—	(13)		—		—		—		(13)
Balance at June 30, 2024	217.2	$	12,912	$	(2,574)	$	(4,478)	$	168	$	6,028

(1)The Company’s Net income totaled $538 million for the quarter ended June 30, 2024, which included $2 million of Net income related to redeemable noncontrolling interests.

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Cash Flows

(Unaudited)


	Six Months Ended June 30,
(millions)	2025		2024
Cash flows from operating activities
Net income	$	1,576	$	1,631

Adjustments to reconcile net income to cash provided by operating activities:
Gain from sales of businesses	—		(257)
Depreciation of fixed assets	93		89
Amortization and impairment of intangible assets	400		144
Share-based compensation expense	266		247
Deferred income taxes	(242)		(122)
Other, net	(111)		(112)
Change in assets and liabilities:



Receivables, net	(902)		(959)
Accounts payable and accrued liabilities	(738)		(251)
Accelerating Aon United Program liabilities	15		61
Current income taxes	(73)		60
Pension, other postretirement and postemployment liabilities	(12)		(17)
Other assets and liabilities	664		308


Cash provided by operating activities	936		822
Cash flows from investing activities
Proceeds from investments	71		146
Purchases of investments	(42)		(91)
Net purchases (sales) of short-term investments - non fiduciary	(153)		189
Acquisition of businesses, net of cash and funds held on behalf of clients	(143)		(2,780)
Sale of businesses, net of cash and funds held on behalf of clients	119		352
Capital expenditures	(120)		(101)


Cash used for investing activities	(268)		(2,285)
Cash flows from financing activities
Share repurchase	(500)		(500)

Proceeds from issuance of shares	33		27
Cash paid for employee taxes on withholding shares	(194)		(176)
Commercial paper issuances, net of repayments	480		(591)
Issuance of debt	—		7,926
Repayment of debt	(300)		(4,328)

Increase in fiduciary liabilities, net of fiduciary receivables	569		283
Cash dividends to shareholders	(308)		(269)
Redeemable and nonredeemable noncontrolling interests, and other financing activities	(153)		(108)




Cash provided by (used for) financing activities	(373)		2,264
Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients	696		(202)
Net increase in cash and cash equivalents and funds held on behalf of clients	991		599
Cash, cash equivalents and funds held on behalf of clients at beginning of period	8,333		7,722
Cash, cash equivalents and funds held on behalf of clients at end of period	$	9,324	$	8,321




Reconciliation of cash and cash equivalents and funds held on behalf of clients:
Cash and cash equivalents	$	1,008	$	974
Cash and cash equivalents and funds held on behalf of clients classified as held for sale	1		38
Funds held on behalf of clients	8,315		7,309
Total cash and cash equivalents and funds held on behalf of clients	$	9,324	$	8,321
Supplemental disclosures:
Interest paid	$	416	$	256
Income taxes paid, net of refunds	$	692	$	553

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Notes to Condensed Consolidated Financial Statements (Unaudited)

1. Basis of Presentation

The accompanying Condensed Consolidated Financial Statements and Notes thereto have been prepared in accordance with U.S. GAAP. The Condensed Consolidated Financial Statements include the accounts of Aon plc and all of its controlled subsidiaries (“Aon” or the “Company”). Intercompany accounts and transactions have been eliminated. The Condensed Consolidated Financial Statements include, in the opinion of management, all adjustments (consisting of normal recurring adjustments and reclassifications) necessary to present fairly the Company’s consolidated financial position, results of operations, and cash flows for all periods presented.

Certain information and disclosures normally included in the Consolidated Financial Statements prepared in accordance with U.S. GAAP have been condensed or omitted. The Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024. The results for the three and six months ended June 30, 2025 are not necessarily indicative of operating results that may be expected for the full year ending December 31, 2025.

Use of Estimates

The preparation of the accompanying Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of reserves and expenses. These estimates and assumptions are based on management’s best estimates and judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management believes its estimates to be reasonable given the current facts available. Aon adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets, and foreign currency exchange rate movements increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment would, if applicable, be reflected in the Condensed Consolidated Financial Statements in future periods.

2. Accounting Principles and Practices

New Accounting Pronouncements

Accounting Standards Issued But Not Yet Adopted

Improvements to Income Tax Disclosures

In December 2023, the FASB issued new accounting guidance under ASC 740, Income Taxes, which requires additional income tax disclosures on an annual basis, including disaggregation of information presented within the reconciliation of the expected tax to the reported tax by specific categories, with certain reconciling items 5% or greater broken out by nature and/or jurisdiction. The new guidance also requires disclosure of income taxes paid, net of refunds, broken out by federal, state/local and foreign, including disclosure of individual jurisdictions when greater than 5% of total net income taxes paid. The new guidance is effective for annual periods beginning the year ended December 31, 2025. The Company is evaluating the transition approach as well as the impact the disclosures will have on the Notes to Consolidated Financial Statements.

Disaggregation of Income Statement Expenses

In November 2024, the FASB issued new accounting guidance under ASC 220, Income Statement — Reporting Comprehensive Income, which requires more detailed information about certain expenses in commonly presented expense captions including inventory, employee compensation, depreciation, and amortization. The new guidance also requires disclosure of total selling expenses and, on an annual basis, an entity’s definition of selling expenses. The new guidance is effective for Aon for the year ended December 31, 2027, with early adoption permitted. Entities may apply the new guidance on a prospective basis, with the option for retrospective application. Aon is currently evaluating the transition approach and the impact the guidance will have on the Notes to Consolidated Financial Statements.

Securities and Exchange Commission Final Rules

The Enhancement and Standardization of Climate-Related Disclosures for Investors

In March 2024, the SEC adopted final rules to enhance and standardize climate-related disclosures. The final rules would require the Company to provide certain climate-related information in Item 7, Management’s Discussion and Analysis

regarding material climate-related risks, activities to mitigate or adapt to such risks, information regarding oversight and management of climate-related risks, information on climate-related targets or goals, and disclosure of Scope 1 and 2 GHG emissions. Additionally, within the Notes to Consolidated Financial Statements, the Company would be required to disclose the financial statement effects of severe weather events and other natural conditions. The final rules were to be effective for Aon for the year ended December 31, 2025, with the exception of GHG emissions disclosures which were to be effective for Aon for the year ended December 31, 2026. The final rules have been subject to several legal challenges. On April 4, 2024, the SEC voluntarily stayed the final rules pending judicial review, and on March 27, 2025, the SEC voted to end its legal defense of the final rules in Court of Appeals for the Eighth Circuit. The Eighth Circuit subsequently suspended the litigation until the SEC informed the court about whether it intends to review or reconsider the rules under administrative procedures and whether the SEC would enforce the rules if ultimately upheld. On July 23, 2025, the SEC filed a status report in response, stating that it does not intend to review or reconsider the rules under administrative procedures, and declined to say whether or not it would enforce the rules if ultimately upheld. The Company is monitoring the judicial process for resolution of the legal challenges and impacts on the disclosure requirements.

3. Revenue from Contracts with Customers

Disaggregation of Revenue

The following table summarizes revenue from contracts with customers by principal service line (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Commercial Risk Solutions	$	2,178	$	2,015	$	4,180	$	3,823
Reinsurance Solutions	688		635		1,877		1,802
Total Risk Capital (1)	2,866		2,650		6,057		5,625
Health Solutions	772		662		1,798		1,395
Wealth Solutions	519		463		1,038		833
Total Human Capital (1)	1,291		1,125		2,836		2,228
Eliminations	(2)		(15)		(9)		(23)
Total revenue	$	4,155	$	3,760	$	8,884	$	7,830

(1)Includes inter-segment revenue. Refer to Note 16 “Segment Information” for further information.

Consolidated revenue from contracts with customers by geographic area, which is attributed on the basis of where the services are performed, is as follows (in millions):


	Three Months Ended June 30, 2025
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	1,324	$	718	$	(2)	$	2,040
Americas other than U.S.	285		110		—		395
U.K.	411		199		—		610
Ireland	24		22		—		46
Europe, Middle East, & Africa other than U.K. and Ireland	469		165		—		634
Asia Pacific	353		77		—		430
Total revenue	$	2,866	$	1,291	$	(2)	$	4,155


	Three Months Ended June 30, 2024
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	1,217	$	635	$	(15)	$	1,837
Americas other than U.S.	260		102		—		362
U.K.	379		169		—		548
Ireland	20		15		—		35
Europe, Middle East, & Africa other than U.K. and Ireland	428		138		—		566
Asia Pacific	346		66		—		412
Total revenue	$	2,650	$	1,125	$	(15)	$	3,760


	Six Months Ended June 30, 2025
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	2,545	$	1,506	$	(9)	$	4,042
Americas other than U.S.	539		230		—		769
U.K.	841		390		—		1,231
Ireland	46		45		—		91
Europe, Middle East, & Africa other than U.K. and Ireland	1,415		481		—		1,896
Asia Pacific	671		184		—		855
Total revenue	$	6,057	$	2,836	$	(9)	$	8,884


	Six Months Ended June 30, 2024
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	2,295	$	1,077	$	(23)	$	3,349
Americas other than U.S.	487		198		—		685
U.K.	790		341		—		1,131
Ireland	36		32		—		68
Europe, Middle East, & Africa other than U.K. and Ireland	1,356		419		—		1,775
Asia Pacific	661		161		—		822
Total revenue	$	5,625	$	2,228	$	(23)	$	7,830

Contract Costs

An analysis of the changes in the net carrying amount of costs to fulfill contracts with customers are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Balance at beginning of period	$	302	$	269	$	424	$	370
Additions	409		386		827		766
Amortization	(448)		(390)		(992)		(868)
Impairment	—		—		—		—
Foreign currency translation and other	10		(1)		14		(4)
Balance at end of period	$	273	$	264	$	273	$	264

An analysis of the changes in the net carrying amount of costs to obtain contracts with customers are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Balance at beginning of period	$	208	$	194	$	207	$	195
Additions	14		18		27		32
Amortization	(40)		(14)		(53)		(27)
Impairment	—		—		—		—
Foreign currency translation and other	5		(2)		6		(4)
Balance at end of period	$	187	$	196	$	187	$	196

4. Accelerating Aon United Program

In the third quarter of 2023, Aon initiated a three-year restructuring program called the Accelerating Aon United Program (the “Program” or the “AAU Program”) with the purpose of streamlining the Company’s technology infrastructure, optimizing its leadership structure and resource alignment, and reducing its real estate footprint to align to its hybrid working strategy. The Program includes technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation and technology costs. The Program is an investment in the Company’s 3x3 Plan that brings together the best of the firm through its Aon United strategy, delivered as Risk Capital and Human Capital, and Aon’s Client Leadership model, powered by Aon Business Services.

Program charges are recognized within Accelerating Aon United Program expenses on the accompanying Condensed Consolidated Statements of Income and consist of the following cost activities:

*•*Technology and other – includes costs associated with actions taken to rationalize applications and to optimize technology across the Company. These costs may include termination fees and other non-capitalizable costs associated with Program initiatives, which include professional service fees.

*•*Workforce optimization – includes costs associated with headcount reduction and other separation-related costs.

*•*Asset impairments – includes non-cash costs associated with impairment of assets, as they are identified, including ROU lease assets, leasehold improvements, and other capitalized assets no longer providing economic benefit.

The Program is currently expected to result in cumulative costs of $1.0 billion, consisting of approximately $0.9 billion of cash charges and approximately $0.1 billion of non-cash charges. For the three and six months ended June 30, 2025, total Program costs incurred were $94 million and $204 million, respectively. Over the life of the Program, the Risk Capital segment is expected to incur approximately $220 million of charges, while the Human Capital segment is expected to incur approximately $60 million of charges, with the remaining charges relating to corporate expenses.

Total Program costs incurred for the three and six months ended June 30, 2025 and 2024 are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Risk Capital	$	32	$	49	$	51	$	92
Human Capital	6		12		10		23
Corporate	56		71		143		136
Total	$	94	$	132	$	204	$	251

The Company’s unpaid liabilities for charges under the Program are primarily included in Accounts payable and accrued liabilities and Other non-current liabilities in the Condensed Consolidated Statements of Financial Position.

The changes in the Company’s liabilities for the Program as of June 30, 2025 are as follows (in millions):


	Technology and other		Workforce optimization		Asset impairments		Total
Liability balance as of December 31, 2024	$	17	$	97	$	—	$	114
Charges	100		100		4		204
Cash payments	(84)		(82)		—		(166)
Foreign currency translation and other	—		5		—		5
Non-cash charges	(2)		(17)		(4)		(23)
Liability balance as of June 30, 2025	$	31	$	103	$	—	$	134
Total costs incurred from inception to date	$	240	$	400	$	88	$	728

5. Cash and Cash Equivalents and Short-Term Investments

Cash and cash equivalents include cash balances and all highly liquid instruments with initial maturities of three months or less. Short-term investments consist of money market funds. The estimated fair value of Cash and cash equivalents and Short-term investments approximates their carrying values.

At June 30, 2025, Cash and cash equivalents and Short-term investments were $1.4 billion compared to $1.3 billion at December 31, 2024. Of the total balances, $158 million and $123 million were restricted as to their use at June 30, 2025 and December 31, 2024, respectively. Included within Short-term investments as of June 30, 2025 and December 31, 2024, were £66 million ($90 million at June 30, 2025 exchange rates) and £63 million ($79 million at December 31, 2024 exchange rates), respectively, of operating funds required to be held by the Company in the U.K. by the FCA, a U.K.-based regulator.

6. Other Financial Data

Condensed Consolidated Statements of Income Information

Other Income (Expense)

Other income (expense) consists of the following (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Extinguishment of debt	$	—	$	(6)	$	—	$	(6)
Gain from sales of businesses	—		257		—		257
Equity earnings	3		1		1		3
Pension and other postretirement	(21)		(11)		(44)		(21)
Foreign currency remeasurement	(38)		5		(54)		9
Financial instruments and other (1)	112		(10)		143		69

Total	$	56	$	236	$	46	$	311

(1)During the three and six months ended June 30, 2025, an $88 million and $108 million gain was recognized, respectively, compared to $82 million recognized for the six months ended June 30, 2024, which was all recognized in the first quarter of 2024. These gains are related to deferred consideration from the affiliates of The Blackstone Group L.P. and the other designated purchasers related to a divestiture completed in a prior year period. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for additional information.

Condensed Consolidated Statements of Financial Position Information

Allowance for Doubtful Accounts

Changes in the net carrying amount of allowance for doubtful accounts are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Balance at beginning of period	$	74	$	81	$	75	$	79
Provision	3		6		6		11
Accounts written off, net of recoveries	(1)		—		(6)		(2)
Foreign currency translation and other	3		—		4		(1)
Balance at end of period	$	79	$	87	$	79	$	87

Other Current Assets

The components of Other current assets are as follows (in millions):


As of	June 30, 2025		December 31, 2024
Costs to fulfill contracts with customers (1)	$	273	$	424
Prepaid expenses	170		135
Taxes receivable	89		43

Other (2)	322		157
Total	$	854	$	759

(1)Refer to Note 3 “Revenue from Contracts with Customers” for further information.

(2)Includes $1 million as of December 31, 2024 that was previously classified as “Assets held for sale” within Aon’s Annual Report on Form 10-K filed February 18, 2025. The prior year balance has been reclassified to conform to current year presentation.

Other Non-Current Assets

The components of Other non-current assets are as follows (in millions):


As of	June 30, 2025		December 31, 2024
Costs to obtain contracts with customers (1)	$	187	$	207
Investments	101		90
Taxes receivable	84		90

Other (2) (3)	200		611
Total	$	572	$	998

(1)Refer to Note 3 “Revenue from Contracts with Customers” for further information.

(2)Includes $9 million as of December 31, 2024 that was previously classified as “Leases” within Aon’s Annual Report on Form 10-K filed February 18, 2025. The prior year balance has been reclassified to conform to current year presentation.

(3)Includes $416 million as of December 31, 2024 of consideration paid into an escrow account related to the acquisition of Griffiths & Armour, which closed on January 1, 2025. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for additional information.

Other Current Liabilities

The components of Other current liabilities are as follows (in millions):


As of	June 30, 2025		December 31, 2024
Deferred revenue (1)	$	385	$	280
Leases	185		191
Taxes payable	166		260
Contingent consideration	58		93

Other	1,473		949
Total	$	2,267	$	1,773

(1)During the three and six months ended June 30, 2025, revenue of $236 million and $466 million, respectively, was recognized in the Condensed Consolidated Statements of Income that was previously deferred. During the three and six months ended June 30, 2024, revenue of $199 million and $378 million, respectively, was recognized in the Condensed Consolidated Statements of Income that was previously deferred.

Other Non-Current Liabilities

The components of Other non-current liabilities are as follows (in millions):


As of	June 30, 2025		December 31, 2024
Taxes payable	$	961	$	885
Contingent consideration	113		104
Compensation and benefits	55		61
Deferred revenue	34		30

Other	86		64
Total	$	1,249	$	1,144

7. Acquisitions and Dispositions of Businesses

Completed Acquisitions

On January 1, 2025, the Company completed the acquisition of 100% of the partnership interests and share capital of Griffiths & Armour, an insurance broker in the United Kingdom.

In total, the Company completed two and nine acquisitions during the three and six months ended June 30, 2025, respectively. The Company completed one acquisition within Risk Capital and one within Human Capital during the three months ended June 30, 2025, and seven within Risk Capital and two within Human Capital, during the six months ended June 30, 2025. The Company completed eight acquisitions, five within Risk Capital and three within Human Capital, during the three and six months ended June 30, 2024. Acquisitions that impact multiple segments are categorized by the segment primarily impacted. The following table includes the preliminary fair values of consideration transferred, assets acquired, and liabilities assumed as a result of the Company’s acquisitions (in millions):


	Six Months Ended June 30, 2025
Consideration transferred:
Cash (1)	$	631
Deferred and contingent consideration	38
Aggregate consideration transferred	$	669
Assets acquired:


Goodwill	362
Intangible assets	322
Other assets (2)	126

Total assets acquired	810
Liabilities assumed:


Total liabilities assumed	141
Net assets acquired	$	669

(1)Includes $416 million as of December 31, 2024 of consideration paid into an escrow account related to the acquisition of Griffiths & Armour, which closed on January 1, 2025.

(2)Includes Cash and cash equivalents of $33 million and $42 million in funds held on behalf of clients.

The results of operations of these acquisitions are included in the Condensed Consolidated Financial Statements as of the respective acquisition dates. The Company’s results of operations would not have been materially different if these acquisitions had been reported from the beginning of the period in which they were acquired.

Significant Prior Year Acquisitions

On April 25, 2024, the Company acquired 100% of the outstanding equity interests of NFP Intermediate Holdings A Corp. (the “NFP Transaction”) in a cash-and-stock merger for an aggregate U.S. GAAP purchase price totaling $9.1 billion, including approximately $3.2 billion used to settle indebtedness of NFP and cash consideration to the selling shareholders, and approximately 19 million class A ordinary shares with a fair value of approximately $5.9 billion, based on the Company’s closing stock price on April 25, 2024. In addition, the Company had other adjustments of $3.9 billion for cash and certain assumed liabilities. As part of the NFP Transaction, the Company acquired certain less-than-wholly owned entities, resulting in the recognition of noncontrolling interests, which are described further below.

The Company financed the NFP Transaction, in part, with the net proceeds from Senior Notes issued on March 1, 2024 totaling to an aggregate amount of $6.0 billion and proceeds from a $2.0 billion delayed draw term loan which was drawn on April 25, 2024. Refer to Note 9 “Debt” for further information.

Aon accounted for its business combinations under the acquisition method of accounting. The acquisition method requires the Company to measure identifiable assets acquired and liabilities assumed at their fair values as of the acquisition date, with the excess of the consideration transferred over those fair values recorded as goodwill. Determining the fair value of intangible assets acquired requires significant judgements, assumptions, and estimates about future events, which the Company believes are reasonable. Use of different estimates and judgements could produce materially different results. These estimates are refined over a measurement period, not to exceed one year from the acquisition date.

The fair values of consideration transferred, assets acquired, liabilities assumed, and redeemable and nonredeemable noncontrolling interests are shown below, where purchase accounting and subsequent measurement period adjustments were finalized in the second quarter of 2025. The following table includes these amounts recognized as of June 30, 2025 as a result of the Company’s acquisition of NFP (in millions):



	NFP Acquisition
Consideration transferred:
Cash	$	3,247

Class A ordinary shares issued	5,882
Aggregate consideration transferred	$	9,129
Assets acquired:
Cash and cash equivalents	$	294
Receivables	329
Fiduciary assets (1)	411
Goodwill	6,838

Other intangible assets:
Customer-related and contract-based	5,950
Tradenames	800
Technology and other	25
Operating lease right-of-use assets	138
Current assets	82
Non-current assets	108
Total assets acquired	14,975
Liabilities assumed:
Accounts payable and accrued liabilities	$	283
Fiduciary liabilities	411
Current liabilities	241
Long-term debt	3,422
Non-current operating lease liabilities	125
Deferred tax liabilities (2)	1,013
Non-current liabilities	158
Total liabilities assumed	5,653
Less: Fair value of redeemable noncontrolling interests (3)	(108)
Less: Fair value of nonredeemable noncontrolling interests	(85)

Net assets acquired	$	9,129

(1)Includes $277 million of funds held on behalf of clients.

(2)As of June 30, 2025, the NFP deferred tax liability related to the U.S. has been netted with the Aon deferred tax asset related to the U.S. and presented as a net deferred tax asset on the Consolidated Statements of Financial Position.

(3)The fair value of the noncontrolling interests acquired was estimated using a DCF model under the income approach and used estimated financial projections developed by management applying market participant assumptions.

Since the acquisition date, the Company made measurement period adjustments related to the NFP Transaction which primarily included the following:

An increase in the fair value of customer-related and contract-based intangible assets of $125 million;
A decrease in the fair value of acquired notes receivable of $107 million (recorded within other current assets and other non-current assets); and
A $110 million decrease in deferred tax liabilities primarily as a result of adjustments to state deferred taxes and deferred taxes recorded on other measurement period adjustments;

Collectively, these adjustments, along with other insignificant adjustments not described above, resulted in a $115 million decrease to goodwill. The measurement period adjustments had an insignificant impact on Net income for the six months ended June 30, 2025.

The purchase price related to the NFP Transaction exceeded the estimated fair value of the tangible and identifiable intangible assets acquired and liabilities assumed and, as a result of the purchase allocation, the Company recorded goodwill of approximately $6.8 billion, which is not deductible for tax purposes. The goodwill recognized is attributable primarily to anticipated growth opportunities and synergies as a result of the NFP Transaction which provides the Company with an expanded presence in the large and fast-growing middle-market. As of June 30, 2025, the company had allocated $2.6 billion of the acquired goodwill to Risk Capital and $4.2 billion of the acquired goodwill to Human Capital.

The fair value of the assets acquired and liabilities assumed in the NFP Transaction approximated their carrying values as of the acquisition date with the exception of customer-related and contract-based assets, tradename, technology, and contingent consideration obligations. Intangible assets acquired had a weighted average useful economic life of 19 years.

Supplemental Pro Forma Combined Information (Unaudited)

The following unaudited pro forma combined financial information presents the combined results of operations of the Company as if the NFP Transaction occurred on January 1, 2023. The unaudited pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the NFP Transaction had taken place on the date indicated or of results that may occur in the future (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Revenue	$	3,910	$	3,729	$	8,528	$	8,099
Net income attributable to Aon shareholders	465		427		1,401		1,269

The unaudited pro forma financial information is based on historical information of the Company and NFP, along with certain material pro forma adjustments. The material pro forma adjustments primarily consist of (i) incremental amortization expense based on the preliminary fair values of the intangible assets acquired; (ii) interest expense to reflect Aon’s borrowings under the Senior Notes offering and delayed draw term loan; (iii) increased compensation expense relating to the issuance of certain cash and equity plans related to the NFP Transaction; (iv) nonrecurring transaction costs; (v) accounting policy alignment adjustments, and (vi) income tax impact of the aforementioned pro forma adjustments. In addition, the Company reflected pro forma adjustments related to measurement period adjustments.

Completed Dispositions

The Company completed one disposition within Human Capital in the three and six months ended June 30, 2025. The Company completed two dispositions, both within Risk Capital, during the three months ended June 30, 2024 and three dispositions, two within Risk Capital and one within Human Capital, during the six months ended June 30, 2024. Dispositions that impact multiple segments are categorized by the segment primarily impacted.

There were insignificant pretax gains recognized related to dispositions for the three and six months ended June 30, 2025. There were $257 million pretax gains recognized related to dispositions for the three and six months ended June 30, 2024. Gains recognized as a result of a disposition are included in Other income (expense) in the Condensed Consolidated Statements of Income.

Other Signific****ant Activity

On May 1, 2017, the Company completed the sale of its benefits administration and business process outsourcing business (the “Divested Business”) to an entity controlled by affiliates of The Blackstone Group L.P. (the “Buyer”) and certain designated purchasers that are direct or indirect subsidiaries of the Buyer. The Buyer purchased all of the outstanding equity interests of the Divested Business, plus certain related assets and liabilities for a purchase price of $4.3 billion in cash paid at closing and deferred consideration of up to $500 million. During the three and six months ended June 30, 2025, the Company earned $88 million and $108 million, respectively, of deferred consideration from the Buyer and the other designated purchasers, compared to $82 million earned during the six months ended June 30, 2024, which was all earned in the first quarter of 2024. These gains are recorded in Other income (expense) in the Condensed Consolidated Statements of Income. In total, the Company has earned $192 million in deferred consideration related to this transaction as of June 30, 2025.

8. Goodwill and Other Intangible Assets

The changes in the net carrying amount of goodwill for the six months ended June 30, 2025 are as follows (in millions):


	Risk Capital		Human Capital		Total
Balance as of December 31, 2024	$	8,785	$	6,449	$	15,234
Goodwill related to current year acquisitions	346		16		362

Measurement period adjustments related to prior year acquisitions	(11)		(17)		(28)
Foreign currency translation and other	301		155		456
Balance as of June 30, 2025	$	9,421	$	6,603	$	16,024

Other intangible assets by asset class are as follows (in millions):


	June 30, 2025						December 31, 2024
	Gross Carrying Amount		Accumulated Amortization and Impairment		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization and Impairment		Net Carrying Amount
Customer-related and contract-based	$	8,417	$	2,448	$	5,969	$	7,994	$	2,050	$	5,944
Tradenames	811		96		715		812		66		746
Technology and other	369		320		49		366		313		53
Total	$	9,597	$	2,864	$	6,733	$	9,172	$	2,429	$	6,743

The estimated future amortization for finite-lived intangible assets as of June 30, 2025 is as follows (in millions):


Remainder of 2025	$	403
2026	739
2027	680
2028	625
2029	576
2030	528
Thereafter	3,182

Total	$	6,733

9. Debt

Notes

In May 2025, Aon Global Limited’s €500 million ($585 million at June 30, 2025 exchange rates) 2.875% Senior Notes due May 2026 were classified as Short-term debt and current portion of long-term debt in the Consolidated Statement of Financial Position as the date of maturity is in less than one year. The Company expects to use cash flow from operations and available cash on hand to repay these Senior Notes.

In December 2024, Aon Global Limited’s $750 million 3.875% Senior Notes due December 2025 were classified as Short-term debt and current portion of long-term debt in the Consolidated Statement of Financial Position as the date of maturity is in less than one year. The Company expects to use cash flow from operations and available cash on hand to repay these Senior Notes.

In June 2024, Aon Global Limited’s $600 million 3.50% Senior Notes matured and were repaid in full.

On April 25, 2024, Aon North America, Inc. drew its $2 billion delayed draw term loan and used proceeds, together with the proceeds of the Senior Notes issued on March 1, 2024 described below, to pay a portion of cash consideration in connection with the acquisition of NFP, completed on April 25, 2024, (the “NFP Transaction”), to repay certain debt of NFP, and to pay related fees and expenses. The term loan matures on April 24, 2027 and is prepayable at any time. In the second quarter of 2025, Aon North America, Inc. repaid $300 million of the outstanding balance under the term loan facility, and as of June 30, 2025, has repaid $1.2 billion of the outstanding balance. The remaining outstanding balance is $800 million.

On April 2, 2024, Aon plc announced that its wholly owned subsidiary, Randolph Acquisition Corp., commenced cash tender offers for any and all of the outstanding 6.875% Senior Notes due 2028, 4.875% Senior Secured Notes due 2028, 7.500%

Senior Secured Notes due 2030 and 8.500% Senior Secured Notes due 2031, each issued by NFP Corp. (together, the “NFP Notes”), upon the terms and subject to the conditions set forth in the Offer to Purchase and Consent Solicitation Statement, dated as of April 2, 2024. The total amount tendered pursuant to the tender offers was approximately $3.3 billion, excluding premiums. On April 26, 2024, Randolph Acquisition Corp. purchased those NFP Notes that were validly tendered and not validly withdrawn prior to April 15, 2024, effecting the early settlement of the offers (the “Early Settlement”). In addition, on April 16, 2024, NFP Corp. delivered notices of redemption of all NFP Notes not validly tendered pursuant to the offers and purchased at the Early Settlement, at a purchase price equal to the price paid to holders of the NFP Notes in connection with the Early Settlement, with a redemption date of April 26, 2024. As a result of the Early Settlement of the offers and the related redemption which occurred on April 26, 2024, no NFP Notes remain outstanding. Aon plc incurred $6 million of debt extinguishment charges in the second quarter of 2024 related to costs related to the NFP Transaction.

On March 1, 2024, Aon North America, Inc. issued $600 million 5.125% Senior Notes due in March 2027, $1 billion 5.150% Senior Notes due in March 2029, $650 million 5.300% Senior Notes due in March 2031, $1.75 billion 5.450% Senior Notes due in March 2034, and $2 billion 5.750% Senior Notes due in March 2054, totaling to an aggregate amount of $6 billion. The Company intends to use the net proceeds from the offering for general corporate purposes, including a portion of which was used to pay a portion of the cash consideration in connection with the NFP Transaction, to repay certain debt of NFP, and to pay related fees and expenses.

Revolving Credit Facilities

As of June 30, 2025, Aon plc had two primary committed credit facilities outstanding: its $1.0 billion multi-currency U.S. credit facility expiring in September 2027 and its $1.0 billion multi-currency U.S. credit facility expiring in October 2028. In aggregate, these two facilities provide $2.0 billion in available credit.

Each of these primary committed credit facilities includes customary representations, warranties, and covenants, including financial covenants that require Aon to maintain specified ratios of adjusted consolidated EBITDA to consolidated interest expense and consolidated debt to adjusted consolidated EBITDA, in each case, tested quarterly. Aon did not have borrowings under either of these primary committed credit facilities as of June 30, 2025 or December 31, 2024. Additionally, Aon was in compliance with the financial covenants and all other covenants contained therein during the rolling 12 months ended June 30, 2025 and December 31, 2024.

Commercial Paper

Aon Corporation has established a U.S. commercial paper program (the “U.S. Program”) and Aon Global Holdings plc has established a European multi-currency commercial paper program (the “European Program” and, together with the U.S. Program, the “Commercial Paper Programs”). Commercial paper may be issued in aggregate principal amounts of up to approximately $1.3 billion under the U.S. Program and €625 million ($731 million at June 30, 2025 exchange rates) under the European Program, not to exceed the amount of the Company’s committed credit facilities, which was $2.0 billion at June 30, 2025. The aggregate capacity of the Commercial Paper Program remains fully backed by the Company’s committed credit facilities. The U.S. Program was fully and unconditionally guaranteed by Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Global Holdings plc and the European Program was fully and unconditionally guaranteed by Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Corporation.

Commercial paper outstanding, which is included in Short-term debt and current portion of long-term debt in the Company’s Condensed Consolidated Statements of Financial Position, is as follows (in millions):


			June 30, 2025			December 31, 2024
Commercial paper outstanding			$	501		$	—

The weighted average commercial paper outstanding and its related interest rates are as follows (in millions, except percentages):


	Three Months Ended June 30,						Six Months Ended June 30,
	2025			2024			2025			2024
Weighted average commercial paper outstanding	$	856		$	34		$	528		$	207
Weighted average interest rate of commercial paper outstanding	4.24		%	5.50		%	4.30		%	5.63		%

10. Income Taxes

The effective tax rate on Net income was 15.5% and 19.3% for the three and six months ended June 30, 2025, respectively. The effective tax rate on Net income was 22.9% and 23.1% for the three and six months ended June 30, 2024, respectively.

For the three and six months ended June 30, 2025, the tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the tax benefit associated with the anticipated sale of certain assets and liabilities classified as held for sale and share-based payments partially offset by the unfavorable impact of other discrete items.

For the three and six months ended June 30, 2024, the tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the favorable impacts of share-based payments offset by the unfavorable impact of discrete items.

11. Shareholders’ Equity

Ordinary Shares

Aon has a share repurchase program authorized by the Company’s Board of Directors (“the Repurchase Program”). The Repurchase Program was established in April 2012 with $5.0 billion in authorized repurchases, and was increased by $5.0 billion in authorized repurchases in each of November 2014, June 2017, and November 2020, and by $7.5 billion in February 2022 for a total of $27.5 billion in repurchase authorizations.

Under the Repurchase Program, the Company’s class A ordinary shares may be repurchased through the open market or in privately negotiated transactions, from time to time, based on prevailing market conditions, and will be funded from available capital.

The following table summarizes the Company’s share repurchase activity (in millions, except per share data):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Shares repurchased	0.7		0.8		1.3		1.6
Average price per share	$	361.25	$	298.09	$	376.76	$	304.20

Repurchase costs recorded to accumulated deficit	$	250	$	250	$	500	$	500

At June 30, 2025, the remaining authorized amount for share repurchases under the Repurchase Program was approximately $1.8 billion. Under the Repurchase Program, the Company has repurchased a total of 173.5 million shares for an aggregate cost of approximately $25.7 billion.

Weighted Average Ordinary Shares

Weighted average ordinary shares outstanding are as follows (in millions):


	Three Months Ended June 30,		Six Months Ended June 30,
	2025	2024	2025	2024
Basic weighted average ordinary shares outstanding	216.2	212.5	216.3	205.8
Dilutive effect of potentially issuable shares	1.1	0.8	1.3	0.9
Diluted weighted average ordinary shares outstanding	217.3	213.3	217.6	206.7

Potentially issuable shares are not included in the computation of Diluted net income per share attributable to Aon shareholders if their inclusion would be antidilutive. There were 0.4 million and 0.1 million shares excluded from the calculation for the three and six months ended June 30, 2025, respectively. There were 1.4 million and 0.6 million shares excluded from the calculation for the three and six months ended June 30, 2024, respectively.

Accumulated Other Comprehensive Loss

Changes in Accumulated other comprehensive loss by component, net of related tax, are as follows (in millions):


	Change in Fair Value of Financial Instruments (1)		Foreign Currency Translation Adjustments		Postretirement Benefit Obligation (2)		Total
Balance at January 1, 2025	$	74	$	(2,051)	$	(2,768)	$	(4,745)


Other comprehensive income (loss) before reclassifications, net	17		843		(7)		853
Amounts reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income (loss)	(6)		—		72		66
Tax expense	2		—		(19)		(17)
Amounts reclassified from accumulated other comprehensive income (loss), net	(4)		—		53		49
Net current period other comprehensive income (loss)	13		843		46		902
Balance at June 30, 2025	$	87	$	(1,208)	$	(2,722)	$	(3,843)


	Change in Fair Value of Financial Instruments (1)		Foreign Currency Translation Adjustments		Postretirement Benefit Obligation (2)		Total
Balance at January 1, 2024	$	2	$	(1,584)	$	(2,791)	$	(4,373)


Other comprehensive income (loss) before reclassifications, net	75		(220)		(13)		(158)
Amounts reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income	2		—		70		72
Tax expense	(1)		—		(18)		(19)
Amounts reclassified from accumulated other comprehensive income, net	1		—		52		53
Net current period other comprehensive income (loss)	76		(220)		39		(105)
Balance at June 30, 2024	$	78	$	(1,804)	$	(2,752)	$	(4,478)

(1)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Total revenue, Interest expense, and Compensation and benefits in the Condensed Consolidated Statements of Income. Refer to Note 13 “Derivatives and Hedging” for further information regarding the Company’s derivative and hedging activity.

(2)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Other income (expense) in the Condensed Consolidated Statements of Income.

12. Employee Benefits

The following table provides the components of the net periodic (benefit) cost recognized in the Condensed Consolidated Statements of Income for Aon’s significant U.K., U.S., and other major pension plans, which are located in the Netherlands and Canada. Service cost is reported in Compensation and benefits and all other components are reported in Other income (expense) as follows (in millions):


	Three Months Ended June 30,
	U.K.				U.S.				Other
	2025		2024		2025		2024		2025		2024
Service cost	$	—	$	—	$	—	$	—	$	—	$	—
Interest cost	39		36		25		23		10		10
Expected return on plan assets, net of administration expenses	(45)		(47)		(30)		(35)		(14)		(14)
Amortization of prior-service cost	—		—		—		—		—		—
Amortization of net actuarial loss	22		21		9		8		4		3
Net periodic cost (benefit)	$	16	$	10	$	4	$	(4)	$	—	$	(1)



	Six Months Ended June 30,
	U.K.				U.S.				Other
	2025		2024		2025		2024		2025		2024
Service cost	$	—	$	—	$	—	$	—	$	—	$	—
Interest cost	76		71		51		46		19		19
Expected return on plan assets, net of administration expenses	(88)		(94)		(60)		(68)		(26)		(27)
Amortization of prior-service cost	1		1		—		—		—		—
Amortization of net actuarial loss	44		41		18		15		7		6
Net periodic (benefit) cost	$	33	$	19	$	9	$	(7)	$	—	$	(2)

Contributions

Assuming no additional contributions are agreed to with, or required by, the pension plan trustees, the Company expects to make total cash contributions of approximately $2 million, $76 million, and $10 million (at December 31, 2024 exchange rates) to its significant U.K., U.S., and other major pension plans, respectively, during 2025. The following table summarizes contributions made to the Company’s significant pension plans (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Contributions to U.K. pension plans	$	1	$	1	$	2	$	2
Contributions to U.S. pension plans	17		4		44		18
Contributions to other major pension plans	6		5		8		7
Total contributions	$	24	$	10	$	54	$	27

13. Derivatives and Hedging

The Company is exposed to market risks, including changes in foreign currency exchange rates and interest rates. To manage the risk related to these exposures, the Company enters into various derivative instruments that reduce these risks by creating offsetting exposures. The Company does not enter into derivative transactions for trading or speculative purposes.

Foreign Exchange Risk Management

The Company is exposed to foreign exchange risk when it earns revenues, pays expenses, enters into monetary intercompany transfers or other transactions denominated in a currency that differs from its functional currency. The Company uses foreign exchange derivatives, typically forward contracts, options and cross currency swaps, to reduce its overall exposure to the effects of currency fluctuations on cash flows. These exposures are hedged, on average, for less than two years. These derivatives are

accounted for as hedges, and changes in fair value are recorded each period in Other comprehensive income (loss) in the Condensed Consolidated Statements of Comprehensive Income.

The Company also uses foreign exchange derivatives, typically forward contracts and options, to economically hedge the currency exposure of the Company’s global liquidity profile, including monetary assets or liabilities that are denominated in a non-functional currency of an entity, typically on a rolling 90-day basis, but may be for up to one year in the future. These derivatives are not accounted for as hedges, and changes in fair value are recorded each period in Other income (expense) in the Condensed Consolidated Statements of Income.

The notional and fair values of derivative instruments are as follows (in millions):


	Notional Amount				Net Amount of Derivative Assets Presented in the Statements of Financial Position (1)				Net Amount of Derivative Liabilities Presented in the Statements of Financial Position (2)
	June 30, 2025		December 31, 2024		June 30, 2025		December 31, 2024		June 30, 2025		December 31, 2024
Foreign exchange contracts
Accounted for as hedges	$	480	$	597	$	30	$	25	$	—	$	—
Not accounted for as hedges (3)	580		394		1		—		—		1
Total	$	1,060	$	991	$	31	$	25	$	—	$	1

(1)Included within Other current assets ($26 million at June 30, 2025 and $15 million at December 31, 2024) or Other non-current assets ($5 million at June 30, 2025 and $10 million at December 31, 2024).

(2)Included within Other current liabilities ($1 million at December 31, 2024).

(3)These contracts typically are for 90-day durations and executed close to the last day of the most recent reporting month, thereby resulting in nominal fair values at the balance sheet date.

The amounts of derivative gains recognized in the Condensed Consolidated Financial Statements are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Gain recognized in Accumulated other comprehensive loss	$	20	$	4	$	22	$	101

The amounts of derivative gains (losses) reclassified from Accumulated other comprehensive loss to the Condensed Consolidated Statements of Income are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Total revenue	$	7	$	2	$	5	$	(2)
Interest expense	$	1	$	—	$	1	$	—
Total	$	8	$	2	$	6	$	(2)

The Company estimates that approximately $15 million of pretax gains currently included within Accumulated other comprehensive loss will be reclassified into earnings in the next twelve months.

During the three and six months ended June 30, 2025, the Company recorded a gain of $24 million and $37 million, respectively, in Other income (expense) for foreign exchange derivatives not designated or qualifying as hedges. During the three and six months ended June 30, 2024, the Company recorded losses of $6 million and $9 million, respectively, in Other income (expense) for foreign exchange derivatives not designated or qualifying as hedges.

14. Fair Value Measurements and Financial Instruments

Accounting standards establish a three-tier fair value hierarchy that prioritizes the inputs used in measuring fair values as follows:

Level 1 — observable inputs such as quoted prices for identical assets in active markets;
Level 2 — inputs other than quoted prices for identical assets in active markets, that are observable either directly or indirectly; and
Level 3 — unobservable inputs in which there is little or no market data which requires the use of valuation techniques and the development of assumptions.

The following methods and assumptions are used to estimate the fair values of the Company’s financial instruments:

Money market funds consist of institutional prime, treasury, and government money market funds. The Company reviews treasury and government money market funds to obtain reasonable assurance that the fund net asset value is $1 per share, and reviews the floating net asset value of institutional prime money market funds for reasonableness.

Equity investments consist of equity securities and equity derivatives valued using the closing stock price on a national securities exchange. Over-the-counter equity derivatives are valued using observable inputs such as underlying prices of the underlying security and volatility. On a sample basis, the Company reviews the listing of Level 1 equity securities in the portfolio, agrees the closing stock prices to a national securities exchange, and independently verifies the observable inputs for Level 2 equity derivatives and securities.

Fixed income investments consist of certain categories of bonds and derivatives. Corporate, government, and agency bonds are valued by pricing vendors who estimate fair value using recently executed transactions and proprietary models based on observable inputs, such as interest rate spreads, yield curves, and credit risk. Asset-backed securities are valued by pricing vendors who estimate fair value using DCF models utilizing observable inputs based on trade and quote activity of securities with similar features. Fixed income derivatives are valued by pricing vendors using observable inputs such as interest rates and yield curves. The Company obtains an understanding of the models, inputs, and assumptions used in developing prices provided by its vendors through discussions with the fund managers. The Company independently verifies the observable inputs, as well as assesses assumptions used for reasonableness based on relevant market conditions and internal Company guidelines. If an assumption is deemed unreasonable, based on internal Company guidelines, it is then reviewed by management and the fair value estimate provided by the vendor is adjusted, if deemed appropriate. These adjustments do not occur frequently and historically are not material to the fair value estimates used in the Condensed Consolidated Financial Statements.

Derivatives are carried at fair value, based upon industry standard valuation techniques that use, where possible, current market-based or independently sourced pricing inputs, such as interest rates, currency exchange rates, or implied volatility.

Debt is carried at outstanding principal balance, less any unamortized issuance costs, discount or premium. Fair value is based on quoted market prices or estimates using DCF analyses based on current borrowing rates for similar types of borrowing arrangements.

The following tables present the categorization of the Company’s assets and liabilities that are measured at fair value on a recurring basis at June 30, 2025 and December 31, 2024 (in millions):


	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at June 30, 2025
Assets
Money market funds (1)	$	4,129	$	—	$	—	$	4,129
Other investments
Government bonds	$	—	$	1	$	—	$	1
Derivatives (2)
Gross foreign exchange contracts	$	—	$	63	$	—	$	63
Liabilities
Derivatives (2)
Gross foreign exchange contracts	$	—	$	32	$	—	$	32


	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2024
Assets
Money market funds (1)	$	3,419	$	—	$	—	$	3,419
Other investments

Government bonds	$	—	$	1	$	—	$	1

Derivatives (2)
Gross foreign exchange contracts	$	—	$	40	$	—	$	40
Liabilities			0
Derivatives (2)
Gross foreign exchange contracts	$	—	$	16	$	—	$	16

(1)Included within Fiduciary assets or Short-term investments in the Condensed Consolidated Statements of Financial Position, depending on their nature and initial maturity.

(2)Refer to Note 13 “Derivatives and Hedging” for additional information regarding the Company’s derivatives and hedging activity.

There were no transfers of assets or liabilities between fair value hierarchy levels in the three and six months ended June 30, 2025 or 2024. The Company recognized no realized or unrealized gains or losses in the Condensed Consolidated Statements of Income during the three and six months ended June 30, 2025 or 2024 related to assets and liabilities measured at fair value using unobservable inputs.

The fair value of debt is classified as Level 2 of the fair value hierarchy. The following table provides the carrying value and fair value for the Company’s term debt (in millions):


	June 30, 2025				December 31, 2024
	Carrying Value		Fair Value		Carrying Value		Fair Value
Current portion of long-term debt	$	1,334	$	1,335	$	749	$	744
Long-term debt	$	15,451	$	14,806	$	16,265	$	15,308

15. Claims, Lawsuits, and Other Contingencies

Legal

Aon and its subsidiaries are subject to numerous claims, tax assessments, lawsuits, and proceedings that arise in the ordinary course of business, which frequently include E&O claims. The damages claimed in these matters are or may be substantial, including, in many instances, claims for punitive, treble, or extraordinary damages. While Aon maintains meaningful E&O insurance and other insurance programs to provide protection against certain losses that arise in such matters, Aon has exhausted or materially depleted its coverage under some of the policies that protect the Company and, consequently, is self-insured or materially self-insured for some claims, including coverage from Aon’s self-insurance program. Accruals for these exposures, and related insurance receivables, when applicable, are included in the Condensed Consolidated Statements of Financial Position and have been recognized in Other general expense in the Condensed Consolidated Statements of Income to the extent that losses are deemed probable and are reasonably estimable. These amounts are adjusted from time to time as developments warrant. Matters that are not probable and reasonably estimable are not accrued for in the financial statements.

The Company’s contingencies and exposures are subject to significant uncertainties, and the determination of likelihood of a loss and estimating any such loss can be complex. The Company is therefore, in certain matters, unable to estimate the range of reasonably possible loss. Although management at present believes that the ultimate outcome of such matters, individually or in the aggregate, will not have a material adverse effect on the consolidated financial position of Aon, legal proceedings are subject to inherent uncertainties and unfavorable rulings or other events. Unfavorable resolutions could include substantial monetary or punitive damages imposed on Aon or its subsidiaries. If unfavorable outcomes of these matters were to occur, future results of operations or cash flows for any particular quarterly or annual period could be materially adversely affected. Certain significant legal proceedings involving us or our subsidiaries are described below.

Current Matters

Aon faces legal action arising out of a fatal plane crash in November 2016. Aon U.K. Limited placed an aviation civil liability reinsurance policy for the Bolivian insurer of the airline. After the crash, the insurer determined that there was no coverage

under the airline’s insurance policy due to the airline’s breach of various policy conditions. In November 2018, the owner of the aircraft filed a claim in Bolivia against Aon, the airline, the insurer and the insurance broker. The claim is for $16 million plus any liability the owner has to third parties. In November 2019, a federal prosecutor in Brazil filed a public civil action naming three Aon entities as defendants, along with the airline, the insurer and the lead reinsurer. That claim seeks pecuniary damages for families affected by the crash in the sum of $300 million; or, in the alternative, $50 million; or, in the alternative, $25 million; plus “moral damages” of an equivalent sum. Separately, in March 2020, the Brazilian Federal Senate invited Aon to give evidence to a Parliamentary Commission of Inquiry in an investigation into the accident. Aon cooperated with that inquiry. In August 2020, 43 individuals (surviving passengers and estates of the deceased) filed a motion in the Circuit Court of the 11th Judicial Circuit in and for Miami-Dade County, Florida, seeking permission to commence proceedings against Aon (and the insurer and reinsurers) for claims totaling $844 million. In December 2022, the High Court in England granted an anti-suit injunction, restricting the 43 individuals who previously filed a motion in the Circuit Court of the 11th Judicial Circuit in and for Miami Dade County, Florida, from continuing litigation in the Circuit Court of the 11th Judicial Circuit against Aon. In June 2025, the 43 individuals filed a counterclaim against Aon in the UK seeking damages. The claim is alleged to be governed in the alternative by the laws of three different jurisdictions and asserts damages in the amount of $16.7 million. The claim alleges that certain aspects of the damages have yet to be calculated. Aon believes that it has meritorious defenses and intends to vigorously defend itself against the remaining claims.

Certain of the Company’s clients and counterparties have initiated or indicated that they may initiate legal proceedings against the Company following allegations in July 2023 that fraudulent letters of credit were issued in the name of third-party banks in connection with transactions for which capital was arranged by Vesttoo Ltd. (“Vesttoo”). Vesttoo was one of the third parties that identified capital providers to collateralize insurance and reinsurance obligations of the Company’s clients and counterparties, including in connection with property and casualty insurance, cyber insurance, and collateral protection insurance. In certain transactions in which Vesttoo identified third party capital providers to collateralize reinsurance obligations, including transactions in which the Company or its affiliates provided brokerage or other services, some letters of credit from third party banks are alleged to have been fraudulent. The pending or threatened legal proceedings against the Company by clients and counterparties – including by the liquidating trust formed to pursue claims on behalf of the Vesttoo bankruptcy estate – allege, among other theories of liability, that in certain circumstances the Company failed to comply with its alleged duty to procure appropriate letters of credit. In particular, on November 30, 2023, Clear Blue Insurance Company and certain of its affiliates filed a lawsuit in New York State Supreme Court against Aon plc and Aon Insurance Managers (Bermuda) Ltd. alleging such claims. While Aon has settled and/or is in discussions to settle certain claims, Aon believes that it has meritorious defenses and intends to vigorously defend itself against those claims that are not settled. In the fourth quarter of 2023, the Company recognized actual or anticipated legal settlement expenses in connection with these matters of $197 million, of which a potentially significant amount may be recoverable in future periods. Aon has sought and will continue to seek recourse against responsible third parties where appropriate. In addition, in August 2023, joint provisional liquidators were appointed over one of the Company’s subsidiaries in Bermuda with respect to segregated accounts that were impacted by the allegedly fraudulent letters of credit. The joint provisional liquidators were released from their appointment on July 3, 2024. Aon continues to cooperate with regulators in Bermuda, and other regulatory authorities could initiate investigations or proceedings against the Company or third parties.

Guarantees and Indemnifications

The Company provides a variety of guarantees and indemnifications to its customers and others. The maximum potential amount of future payments represents the notional amounts that could become payable under the guarantees and indemnifications if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or other methods. These amounts may bear no relationship to the expected future payments, if any, for these guarantees and indemnifications. Any anticipated amounts payable are included in the Condensed Consolidated Financial Statements, and are recorded at fair value.

The Company expects that, as prudent business interests dictate, additional guarantees and indemnifications may be issued from time to time.

Guarantee of Registered Securities

On June 22, 2023, Aon plc, Aon Global Limited, Aon Global Holdings plc, Aon Corporation, and Aon North America, Inc., and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), as applicable, entered into supplemental indentures, each dated June 22, 2023, amending each of the following indentures (as amended, supplemented or modified from time to time) to add for the benefit of the holders of the instruments issued thereunder a full and unconditional guarantee of Aon North America, Inc. thereunder: (i) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated January 13, 1997); (ii) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and

the Trustee (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated September 10, 2010); (iii) Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated December 12, 2012); (iv) Second Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated May 20, 2015, amending and restating the Indenture, dated May 24, 2013); (v) Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated November 13, 2015); and (vi) Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated December 3, 2018).

On February 28, 2024, Aon plc, Aon Corporation, Aon Global Holdings plc, and Aon Global Limited (together with Aon plc, Aon Corporation and Aon Global Holdings, plc, the “Guarantors”), Aon North America, Inc. and the Trustee entered into an indenture and first supplemental indenture, each dated March 1, 2024, to add for the benefit of the holders of the instruments issued thereunder a full and unconditional guarantee by the Guarantors of the obligations of Aon North America, Inc. thereunder.

Letters of Credit

Aon has entered into a number of arrangements whereby the Company’s performance on certain obligations is guaranteed by a third party through the issuance of LOCs. The Company had total LOCs outstanding of approximately $126 million at June 30, 2025, and $124 million at December 31, 2024. These LOCs cover the beneficiaries related to certain of Aon’s U.S. and Canadian secure non-qualified pension plan schemes, reinsurance obligations related to Aon’s own E&O liability insurance program, and secure deductible retentions for Aon’s own workers compensation program. The Company has also obtained LOCs to cover contingent payments for taxes and other business obligations to third parties, and other guarantees for miscellaneous purposes at its international subsidiaries.

Premium Payments

The Company has certain contractual contingent guarantees for premium payments owed by clients to certain insurance companies. The maximum exposure with respect to such contractual contingent guarantees was approximately $161 million at June 30, 2025 compared to $162 million at December 31, 2024.

16. Segment Information

Reportable segments were determined using a management approach. They are consistent with how the CODM assesses the performance of the Company and allocates resources based on two segments: Risk Capital and Human Capital. This segmentation allows the CODM, who is our Chief Executive Officer and President, to align the assessment of performance and allocation of resources, based on segment operating income and operating margin, with how the Company addresses client need, accelerating its Aon United strategy through growth in Risk Capital and Human Capital and maximizing value for Aon and its shareholders.

Risk Capital supports clients through its Commercial Risk and Reinsurance solution lines. Commercial Risk includes insurance and specialty brokerage, global risk consulting, captives management, and Affinity programs. Reinsurance includes treaty reinsurance, facultative reinsurance, Strategy and Technology Group, and capital markets.

Human Capital supports clients through its Health and Wealth solution lines. Health includes consulting and brokerage, consumer benefits solutions, and talent advisory services. Wealth includes retirement consulting, pension administration, and investments consulting. Refer to Note 3 “Revenue from Contracts with Customers” for information on revenue by principal service line.

The Company does not present assets by reportable segment and this information is not used by the CODM to assess the performance of, or allocate resources to the Company’s reportable segments. As such, segment assets are not provided to the CODM.

The following tables include information about our reportable segments, including total segment revenue, consolidated revenue, segment operating income, and income before income taxes:


	Three Months Ended June 30,
	Risk Capital		Human Capital		Corporate/Eliminations		Total Consolidated
	2025	2024	2025	2024	2025	2024	2025	2024
Revenue
Total revenue (1)	$2,866	$2,650	$1,291	$1,125	$(2)	$(15)	$4,155	$3,760
Expenses
Compensation and benefits	1,541	1,390	796	710	23	30	2,360	2,130
Information technology	88	93	45	39	3	—	136	132
Premises	54	54	30	28	1	—	85	82
Other expenses (2)	319	329	303	258	93	173	715	760
Total operating expenses	2,002	1,866	1,174	1,035	120	203	3,296	3,104
Operating income	$864	$784	$117	$90	$(122)	$(218)	$859	$656
Operating margin	30.1%	29.6%	9.1%	8.0%			20.7%	17.4%

Non-operating expenses
Interest income							—	31
Interest expense							(212)	(225)
Other income (expense)							56	236
Income before income taxes							$703	$698


	Six Months Ended June 30,
	Risk Capital		Human Capital		Corporate/Eliminations		Total Consolidated
	2025	2024	2025	2024	2025	2024	2025	2024
Revenue
Total revenue (1)	$6,057	$5,625	$2,836	$2,228	$(9)	$(23)	$8,884	$7,830
Expenses
Compensation and benefits	3,002	2,744	1,570	1,237	37	32	4,609	4,013
Information technology	178	182	90	74	4	—	272	256
Premises	106	104	59	49	2	—	167	153




Other expenses (2)	710	626	597	391	209	270	1,516	1,287
Total operating expenses	3,996	3,656	2,316	1,751	252	302	6,564	5,709
Operating income	$2,061	$1,969	$520	$477	$(261)	$(325)	$2,320	$2,121
Operating margin	34.0%	35.0%	18.3%	21.4%			26.1%	27.1%

Non-operating expenses
Interest income							5	59
Interest expense							(418)	(369)
Other income (expense)							46	311
Income before income taxes							$1,953	$2,122

(1)Includes fiduciary investment income of $60 million and $125 million, respectively, in Risk Capital and less than $1 million and $2 million, respectively, in Human Capital for the three and six months ended June 30, 2025. Includes fiduciary investment income of $73 million and $151 million, respectively, in Risk Capital and $2 million and $3 million, respectively, in Human Capital for the three and six months ended June 30, 2024.

(2)Includes expenses related to Depreciation of fixed assets, Amortization and impairment of intangible assets, Accelerating Aon United Program expenses, and Other general expenses.

Revenue

Reportable segment revenue includes inter-segment revenue of less than $1 million and $5 million, respectively, for Risk Capital and $2 million and $4 million, respectively, for Human Capital for the three and six months ended June 30, 2025, compared to $10 million and $16 million, respectively, for Risk Capital and $5 million and $7 million, respectively, for Human Capital for the three and six months ended June 30, 2024. This inter-segment revenue is eliminated as a Corporate adjustment to reconcile to the Company's Consolidated Total revenue.

Segment Operating Expenses

The Company’s segment operating expenses are generally attributed to the function of the business. Segment expenses exclude governance costs, post-retirement benefits, and other costs that are not directly attributable to a specific segment. These expenses are considered corporate expenses/eliminations.

Non-operating Expenses

The Company’s non-operating income (expenses) primarily consist of Interest income, Interest expense and Other income (expense) which are not allocated to our reportable segments, as the CODM assesses performance based on operating income results. Interest income represents income earned on Cash and cash equivalents and Short-term investments. Interest expense represents the cost of debt obligations. Other income (expense) consists of equity earnings, realized gains or losses on the sale of investments, gains on the disposal of businesses, gains or losses on derivatives, and gains or losses on foreign currency remeasurement.

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