STATEMENT OF CONSOLIDATED SHAREHOLDERS EQUITY (Unaudited) (USD $) In Millions	Total	Common Stock [Member]	Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Noncontrolling Interest [Member]	Series D Preferred Stock [Member]
BALANCE at Dec. 31, 2012	$ 31,331	$ 245	$ 9,859	$ 20,161	$ (30)	$ (131)	$ 31,331		$ 1,227
Net income	717			717			717
Commodity hedges, net of tax	(2)					(2)	(2)
Preferred	(19)			(19)			(19)
Common ($0.20 per share)	(78)			(78)			(78)
Common stock activity, net	(8)		(8)				(8)
Compensation expense	46		46				46
BALANCE at Mar. 31, 2013	31,987	245	9,897	20,781	(30)	(133)	31,987		1,227
BALANCE at Dec. 31, 2013	35,393	255	12,251	22,032	(1,027)	(115)	33,396	1,997
Net income	334			236			236	98
Commodity hedges, net of tax	(1)					(1)	(1)
Common ($0.20 per share)	(98)			(98)			(98)
Common stock activity, net	(19)		(19)				(19)
Treasury stock activity, net	(484)				(484)		(484)
Compensation expense	52		52				52
BALANCE at Mar. 31, 2014	$ 35,177	$ 255	$ 12,284	$ 22,170	$ (1,511)	$ (116)	$ 33,082	$ 2,095