ALLOWANCE FOR CREDIT LOSSES (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended					3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 U.S. loan portfolios	Sep. 30, 2011 U.S. loan portfolios	Sep. 30, 2011 Egg Banking PLC	Sep. 30, 2012 New OCC guidance	Sep. 30, 2012 New OCC guidance Consumer	Mar. 31, 2012 Anticipated forgiveness of principal in connection with national mortgage settlement
Allowance for loan losses disclosures
Gross credit losses	$ (4,638)	$ (5,217)	$ (13,726)	$ (18,254)				$ (635)	$ (635)	$ (370)
Net reserve builds (releases)	868	1,591	1,678	7,023				600	600
Net specific reserve builds (releases)	600	(126)	1,908	(222)						350
Other, net	$ 227	$ 845	$ 613	$ 1,802	$ 620	$ 1,230	$ 240