Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Common stock dividends, per share	$ 0.12	$ 0.04	$ 0.22
Series A preferred stock dividends, per share	$ 4,056	$ 4,056	$ 4,056
U.S. Treasury preferred stock dividends, per share	$ 1,236	$ 5,000	$ 5,004
Ending Balance, noncontrolling interest	$ 107,000,000	$ 129,000,000
Treasury Stock and Other
Ending Balance, treasury stock	(851,000,000)	(974,000,000)	1,104
Ending Balance, compensation element of restricted stock	(48,000,000)	(43,000,000)	59
Ending Balance, noncontrolling interest	$ 107,000,000	$ 129,000,000	$ 108