Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net Income	$ 11,300	$ 3,569	$ 4,248
Other comprehensive income:
Change in Pension and Retiree Health and Welfare benefits, net of taxes of ($37 million), ($45 million), and ($31 million), respectively	112	72	50
Change in accumulated other comprehensive income (loss) of equity method investees	0	(1)	0
Other comprehensive income (loss), net of tax	112	71	50
Total comprehensive income	$ 11,412	$ 3,640	$ 4,298