TOTAL EQUITY AND EARNINGS (LOSS) PER SHARE (Details 2) (USD $)	6 Months Ended	1 Months Ended				3 Months Ended	6 Months Ended	1 Months Ended		6 Months Ended
	Jun. 30, 2012	May 31, 2012 Common Stock	Mar. 31, 2012 Common Stock	May 10, 2012 Common Stock	Mar. 13, 2012 Common Stock	Mar. 31, 2012 Common Stock Maximum	Jun. 30, 2012 Common Stock Maximum	May 31, 2012 Treasury Stock	Mar. 31, 2012 Treasury Stock	Jun. 30, 2012 Treasury Stock
Share Issuances and Repurchases
Aggregate purchase amount						$ 3,000,000,000	$ 2,000,000,000
Shares repurchased	(169,022,046)							66,000,000	103,000,000	(169,022,046)
Common stock sold by the Department of the Treasury (in shares)		189,000,000	207,000,000
Initial public offering price (in dollars per share)				$ 30.50	$ 29.00
Shares repurchased	$ 5,000,000,000							$ 2,000,000,000	$ 3,000,000,000	$ 5,000,000,000