Item 15. Exhibits and Financial Statement Schedules


(a)	The following documents are filed as part of this report:

(1) Financial Statements:



	Page(s)
Report of Independent Registered Public Accounting Firm — PricewaterhouseCoopers LLP	50
Consolidated Statement of Income for the three years ended December 31, 2019	52
Consolidated Statement of Comprehensive Income for the three years ended December 31, 2019	53
Consolidated Balance Sheet at December 31, 2019 and 2018	54
Consolidated Statement of Cash Flows for the three years ended December 31, 2019	55
Consolidated Statement of Equity for the three years ended December 31, 2019	56
Notes to the Consolidated Financial Statements	57 to 90

(2) Financial Statement Schedules:

Included below is Schedule II - Valuation and Qualifying Accounts for each of the three years in the period ended December 31, 2019.

(3) Exhibits:

The Exhibit Index on the following pages lists the exhibits that are filed as part of this report.

Schedule II — Valuation and Qualifying Accounts



	Year ended December 31
Millions of Dollars	2019			2018			2017
Employee Termination Benefits
Balance at January 1	$	19		$	62		$	111
Additions (reductions) charged to expense	6			5			20
Payments	(18		)	(48		)	(69		)
Balance at December 31	$	7		$	19		$	62
Allowance for Doubtful Accounts
Balance at January 1	$	980		$	606		$	487
Additions (reductions)	(128		)	379			128
Bad debt write-offs	(3		)	(5		)	(9		)
Balance at December 31	$	849		$	980		$	606
Deferred Income Tax Valuation Allowance*
Balance at January 1	$	15,973		$	16,574		$	16,069
Additions to deferred income tax expense	1,336			2,000			2,681
Reduction of deferred income tax expense	(1,344		)	(2,601		)	(2,176		)
Balance at December 31	$	15,965		$	15,973		$	16,574

See also Note 15 to the Consolidated Financial Statements, beginning on page 74.