ALLOWANCE FOR CREDIT LOSSES (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Allowance for loan losses disclosures
Other, net	$ 32	$ (717)
U.S. loan portfolios
Allowance for loan losses disclosures
Other, net	(145)	(560)
Egg Banking PLC
Allowance for loan losses disclosures
Other, net	$ (240)