CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Millions		Total		Common Stock [Member]	Paid-in Capital [Member]		Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2009		$ 20,415		$ 50	$ 7,243		$ 13,868	$ (721)	$ (512)	$ 487
Net income (loss)		821					761			60
Common stock issued		254		1	253
Dividends - common		(180)					(180)
Repurchase of common stock		(42)						(42)
Subsidiary equity transactions		256								256
Distributions to noncontrolling interest owners		(48)								(48)
Reclassification of previously deferred derivative losses to net income		17	[1]						17
Adjustments for pension and other postretirement plans		(54)							(54)
Balance at Dec. 31, 2010		21,439		51	7,496		14,449	(763)	(549)	755
Net income (loss)		(2,568)					(2,649)			81
Common stock issued		161			161
Dividends - common		(181)					(181)
Repurchase of common stock		(41)						(41)
Subsidiary equity transactions		301			32	[2]				269
Conversion of subordinated limited partner units to common units	[2],[3]				162					(162)
Distributions to noncontrolling interest owners		(82)								(82)
Contributions from noncontrolling interest owners		17								17
Reclassification of previously deferred derivative losses to net income		10	[1]						10
Adjustments for pension and other postretirement plans		(73)							(73)
Balance at Dec. 31, 2011		18,983		51	7,851		11,619	(804)	(612)	878
Net income (loss)		2,445					2,391			54
Common stock issued		249			249
Dividends - common		(181)					(181)
Repurchase of common stock		(37)						(37)
Subsidiary equity transactions		547			130	[2]				417
Distributions to noncontrolling interest owners		(112)								(112)
Contributions from noncontrolling interest owners		16								16
Reclassification of previously deferred derivative losses to net income		8	[1]						8
Adjustments for pension and other postretirement plans		(36)							(36)
Balance at Dec. 31, 2012		$ 21,882		$ 51	$ 8,230		$ 13,829	$ (841)	$ (640)	$ 1,253

[1] Net of income tax benefit (expense) of $(4) million in 2012, $(5) million in 2011, and $(9) million in 2010.

[2] The $130 million increase to paid-in capital, together with the Company’s net income (loss) attributable to common stockholders, totaled $2,521 million for the year ended December 31, 2012. The $194 million increase to paid-in capital, together with the Company’s net income (loss) attributable to common stockholders, totaled $(2,455) million for the year ended December 31, 2011.

[3] Includes $92 million of tax associated with subsidiary equity transactions that occurred prior to the conversion of subordinated limited partner units to common units.