Item 6. SELECTED FINANCIAL DATA



	For the Years Ended December 31,
(In millions, except per share data)	2019			2018			2017			2016			2015
Statement of Operations data:
Operating revenues	$	3,610		$	3,440		$	3,357		$	3,302		$	3,159
Net income attributable to common shareholders	621			567			426			468			476
Net income attributable to common shareholders per basic common share	$	3.44		$	3.16		$	2.39		$	2.63		$	2.66
Net income attributable to common shareholders per diluted common share	3.43			3.15			2.38			2.62			2.64
Balance Sheet data:
Total assets	$	22,682		$	21,223		$	19,482		$	18,482		$	17,241
Long-term debt and redeemable preferred stock at redemption value	8,644			7,576			6,498			5,759			5,874
Other data:
Cash dividends declared per common share	$	2.00		$	1.82		$	1.66		$	1.50		$	1.36
Net cash provided by operating activities (a) (b)	1,383			1,386			1,449			1,289			1,195
Net cash used in investing activities (b)	(1,945		)	(2,036		)	(1,672		)	(1,590		)	(1,459		)
Net cash provided by financing activities (a) (b)	494			726			207			328			290
Capital expenditures included in net cash used in investing activities	(1,654		)	(1,586		)	(1,434		)	(1,311		)	(1,160		)


(a)	The information for the years ended December 31, 2016 and 2015, has been revised to reflect the retrospective application of Accounting Standards Update 2016-09, Improvements to Employee Share-Based Payment Accounting, which was adopted by the Company as of January 1, 2017.


(b)	The information for the years ended December 31, 2016 and 2015, has been revised to reflect the retrospective application of Accounting Standards Update 2016-18, Restricted Cash, which was adopted by the Company as of December 31, 2017.