Statement of Changes in Consolidated Equity (USD $) In Millions, unless otherwise specified	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]
Balance at Jun. 30, 2012	$ 16,914	$ 55	$ 1,178	$ 7,538	$ 11,655	$ (3,890)	$ (2,878)	$ 3,256
Net income (loss)	(175)				(143)			(32)
Other comprehensive income (loss)	139						101	38
Cash dividends declared:
Preferred @ $1.875 for three month ended September 30, 2013 & 2012 and $3.75 for nine month ended September 30, 2013 & 2012 per share	(1)				(1)
Common @ $0.06 for three month ended September 30, 2013 & 2012 and $0.12 for nine month ended September 30, 2013 & 2012 per share	(64)				(64)
Stock-based compensation	15			15
Common stock issued: compensation plans	4			(4)		8
Contributions	22							22
Balance at Sep. 30, 2012	16,854	55	1,178	7,549	11,447	(3,882)	(2,777)	3,284
Balance at Dec. 31, 2011	17,195	55	1,178	7,561	11,629	(3,952)	(2,627)	3,351
Net income (loss)	(95)				(51)			(44)
Other comprehensive income (loss)	(234)						(150)	(84)
Cash dividends declared:
Preferred @ $1.875 for three month ended September 30, 2013 & 2012 and $3.75 for nine month ended September 30, 2013 & 2012 per share	(2)				(2)
Common @ $0.06 for three month ended September 30, 2013 & 2012 and $0.12 for nine month ended September 30, 2013 & 2012 per share	(129)				(129)
Stock-based compensation	54			54
Common stock issued: compensation plans	4			(66)		70
Distributions	(71)							(71)
Contributions	132							132
Balance at Sep. 30, 2012	16,854	55	1,178	7,549	11,447	(3,882)	(2,777)	3,284
Balance at Dec. 31, 2012	16,523	55	1,178	7,560	11,689	(3,881)	(3,402)	3,324
Net income (loss)	66				54			12
Other comprehensive income (loss)	(571)						(312)	(259)
Cash dividends declared:
Preferred @ $1.875 for three month ended September 30, 2013 & 2012 and $3.75 for nine month ended September 30, 2013 & 2012 per share	(2)				(2)
Common @ $0.06 for three month ended September 30, 2013 & 2012 and $0.12 for nine month ended September 30, 2013 & 2012 per share	(130)				(130)
Stock-based compensation	59			59
Common stock issued: compensation plans	(12)			(83)		71
Distributions	(80)							(80)
Contributions	12							12
Other	(1)							(1)
Balance at Sep. 30, 2013	15,864	55	1,178	7,536	11,611	(3,810)	(3,714)	3,008
Balance at Jun. 30, 2013	15,858	55	1,178	7,524	11,653	(3,812)	(3,783)	3,043
Net income (loss)	44				24			20
Other comprehensive income (loss)	40						69	(29)
Cash dividends declared:
Preferred @ $1.875 for three month ended September 30, 2013 & 2012 and $3.75 for nine month ended September 30, 2013 & 2012 per share	(1)				(1)
Common @ $0.06 for three month ended September 30, 2013 & 2012 and $0.12 for nine month ended September 30, 2013 & 2012 per share	(65)				(65)
Stock-based compensation	13			13
Common stock issued: compensation plans	1			(1)		2
Distributions	(27)							(27)
Other	1							1
Balance at Sep. 30, 2013	$ 15,864	$ 55	$ 1,178	$ 7,536	$ 11,611	$ (3,810)	$ (3,714)	$ 3,008