Statement Of Changes In Consolidated Equity (USD $) In Millions, unless otherwise specified	Preferred Stock [Member]	Common Stock [Member]	Additional Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]	Total
Balance at Dec. 31, 2008	$ 55	$ 925	$ 5,850	$ 12,400	$ (4,326)	$ (3,169)	$ 2,597	$ 14,332
Net (loss) income				(1,151)			61	(1,090)
Other comprehensive income (loss)						1,077	323	1,400
Cash dividends declared:
Preferred @ $3.75 per share				(2)				(2)
Common @ $0.26 for 2009, $0.12 for 2010, $0.12 for 2011 per share				(227)				(227)
Beneficial conversion option on convertible notes, net of tax			43					43
Stock-based compensation (R)			87					87
Common stock issued: compensation plans (R)			(76)		58			(18)
Issuance of common stock (R)		172	704					876
Distributions							(140)	(140)
Contributions (M)							440	440
Purchase of equity from noncontrolling interest (F & P)							(179)	(179)
Other (I)							(2)	(2)
Balance at Dec. 31, 2009	55	1,097	6,608	11,020	(4,268)	(2,092)	3,100	15,520
Net (loss) income				254			138	392
Other comprehensive income (loss)						417	334	751
Cash dividends declared:
Preferred @ $3.75 per share				(2)				(2)
Common @ $0.26 for 2009, $0.12 for 2010, $0.12 for 2011 per share				(123)				(123)
Stock-based compensation (R)			84					84
Common stock issued: compensation plans (R)			(139)		122			(17)
Issuance of common stock (R)		44	556					600
Distributions							(256)	(256)
Contributions (M)							162	162
Purchase of equity from noncontrolling interest (F & P)			(2)				(4)	(6)
Other (I)			(20)				1	(19)
Balance at Dec. 31, 2010	55	1,141	7,087	11,149	(4,146)	(1,675)	3,475	17,086
Net (loss) income				611			194	805
Other comprehensive income (loss)						(952)	(229)	(1,181)
Cash dividends declared:
Preferred @ $3.75 per share				(2)				(2)
Common @ $0.26 for 2009, $0.12 for 2010, $0.12 for 2011 per share				(129)				(129)
Stock-based compensation (R)			83					83
Common stock issued: compensation plans (R)			(172)		194			22
Issuance of common stock (R)		37	563					600
Distributions							(257)	(257)
Contributions (M)							169	169
Other (I)							(1)	(1)
Balance at Dec. 31, 2011	$ 55	$ 1,178	$ 7,561	$ 11,629	$ (3,952)	$ (2,627)	$ 3,351	$ 17,195