Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net income	$ 1,156	$ 1,035	$ 3,164	$ 2,675
Other comprehensive income:
Change in Pension and Retiree Health and Welfare benefits, net of tax benefit of $0 million, $0 million, $1 million and $0 million, respectively	0	(1)	0	(1)
Change in accumulated other comprehensive income of equity method investees	0	1	(1)	4
Other Comprehensive Income (Loss), Net of Tax	0	0	(1)	3
Total comprehensive income	$ 1,156	$ 1,035	$ 3,163	$ 2,678