DISCONTINUED OPERATIONS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Discontinued operations
Gain on sale of discontinued operations		$ 16		$ (1)	$ 146
Results of Discontinued Operations
Total revenues, net of interest expense	11	39		12	336
Income (loss) from discontinued operations	(46)	(5)		(49)	38
Gain (loss) on sale		16		(1)	146
Provision (benefit) for income taxes and noncontrolling interest, net of taxes	(15)	10		(13)	72
Income (loss) from discontinued operations, net of taxes	(31)	1		(37)	112
Discontinued operations
Cash flows from operating activities					(146)
Cash flows from investing activities					2,827
Cash flows from financing activities					(12)
Net cash provided by discontinued operations					2,669
Assets
Total assets	44			44
Liabilities
Total liabilities	0			0
Citi Capital Advisors Business
Results of Discontinued Operations
Total revenues, net of interest expense	11
Income (loss) from discontinued operations	(45)
Provision (benefit) for income taxes and noncontrolling interest, net of taxes	(16)
Income (loss) from discontinued operations, net of taxes	(29)
Assets
Deposits at interest with banks	7			7
Goodwill	17			17
Intangible assets	20			20
Total assets	44			44
Egg Banking PLC
Discontinued operations
Gain on sale of discontinued operations		15	126	(1)	141
Results of Discontinued Operations
Total revenues, net of interest expense		38		1	331
Income (loss) from discontinued operations	(1)	(5)		(4)	39
Gain (loss) on sale		15	126	(1)	141
Provision (benefit) for income taxes and noncontrolling interest, net of taxes	(1)	4		(2)	63
Income (loss) from discontinued operations, net of taxes		6		(3)	117
Discontinued operations
Cash flows from operating activities					(146)
Cash flows from investing activities					2,827
Cash flows from financing activities					(12)
Net cash provided by discontinued operations					2,669
Assets
Total assets			2,700
Liabilities
Total liabilities			$ 39