INVESTMENTS (Details 9) (USD $) In Millions																6 Months Ended					3 Months Ended	6 Months Ended						3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended										6 Months Ended								3 Months Ended	6 Months Ended
	Jun. 30, 2011 Mortgage-backed securities Total securities AFS	Mar. 31, 2011 Mortgage-backed securities Total securities AFS	Dec. 31, 2010 Mortgage-backed securities Total securities AFS	Jun. 30, 2011 Prime Total securities AFS	Mar. 31, 2011 Prime Total securities AFS	Dec. 31, 2010 Prime Total securities AFS	Jun. 30, 2011 Alt-A Total securities AFS	Mar. 31, 2011 Alt-A Total securities AFS	Dec. 31, 2010 Alt-A Total securities AFS	Jun. 30, 2011 Asset-based financing Total securities AFS	Mar. 31, 2011 Asset-based financing Total securities AFS	Dec. 31, 2010 Asset-based financing Total securities AFS	Jun. 30, 2011 Commercial. Total securities AFS	Mar. 31, 2011 Commercial. Total securities AFS	Dec. 31, 2010 Commercial. Total securities AFS	Jun. 30, 2011 U.S. Treasury Total securities AFS	Mar. 31, 2011 U.S. Treasury Total securities AFS	Jun. 30, 2011 State and municipal securities Total securities AFS	Mar. 31, 2011 State and municipal securities Total securities AFS	Dec. 31, 2010 State and municipal securities Total securities AFS	Jun. 30, 2011 Foreign government Total securities AFS	Jun. 30, 2011 Foreign government Total securities AFS	Jun. 30, 2011 Corporate Total securities AFS	Mar. 31, 2011 Corporate Total securities AFS	Jun. 30, 2011 Other debt securities Total securities AFS	Mar. 31, 2011 Other debt securities Total securities AFS	Dec. 31, 2010 Other debt securities Total securities AFS	Jun. 30, 2011 Total securities AFS	Jun. 30, 2011 Total securities AFS	Jun. 30, 2011 Mortgage-backed securities Held-to-maturity Securities.	Jun. 30, 2011 Mortgage-backed securities Held-to-maturity Securities.	Jun. 30, 2011 Prime Held-to-maturity Securities.	Mar. 31, 2011 Prime Held-to-maturity Securities.	Jun. 30, 2011 Alt-A Held-to-maturity Securities.	Jun. 30, 2011 Alt-A Held-to-maturity Securities.	Jun. 30, 2011 Subprime Held-to-maturity Securities.	Jun. 30, 2011 Subprime Held-to-maturity Securities.	Jun. 30, 2011 Non-U.S. residential Held-to-maturity Securities.	Mar. 31, 2011 Non-U.S. residential Held-to-maturity Securities.	Dec. 31, 2010 Non-U.S. residential Held-to-maturity Securities.	Jun. 30, 2011 Asset-based financing Held-to-maturity Securities.	Mar. 31, 2011 Asset-based financing Held-to-maturity Securities.	Dec. 31, 2010 Asset-based financing Held-to-maturity Securities.	Jun. 30, 2011 Commercial. Held-to-maturity Securities.	Mar. 31, 2011 Commercial. Held-to-maturity Securities.	Dec. 31, 2010 Commercial. Held-to-maturity Securities.	Jun. 30, 2011 State and municipal securities Held-to-maturity Securities.	Mar. 31, 2011 State and municipal securities Held-to-maturity Securities.	Jun. 30, 2011 Corporate Held-to-maturity Securities.	Mar. 31, 2011 Corporate Held-to-maturity Securities.	Dec. 31, 2010 Corporate Held-to-maturity Securities.	Jun. 30, 2011 Other debt securities Held-to-maturity Securities.	Mar. 31, 2011 Other debt securities Held-to-maturity Securities.	Dec. 31, 2010 Other debt securities Held-to-maturity Securities.	Jun. 30, 2011 Held-to-maturity Securities.	Jun. 30, 2011 Held-to-maturity Securities.
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	$ 296	$ 296	$ 296	$ 292	$ 292	$ 292	$ 2	$ 2	$ 2	$ 10	$ 10	$ 10	$ 2	$ 2	$ 2	$ 48	$ 66	$ 3	$ 3	$ 3	$ 159	$ 159	$ 154	$ 155	$ 52	$ 52	$ 52	$ 741	$ 722	$ 2,285	$ 3,795	$ 308	$ 84	$ 1,845	$ 3,149	$ 250	$ 232	$ 96	$ 96	$ 96	$ 113	$ 113	$ 113	$ 10	$ 10	$ 10	$ 7	$ 9	$ 351	$ 351	$ 351	$ 5	$ 5	$ 5	$ 2,763	$ 4,271
Credit impairments recognized in earnings on securities not previously impaired																18							1						19	16	20			15	18	1	2										2								16	22
Credit impairments recognized in earnings on securities that have been previously impaired																					4	4						4	4	106	218	2		105	194	1	22																		106	218
Reductions due to credit impaired securities sold, transferred or matured																														(13)	(1,639)	(226)		(13)	(1,409)		(4)																		(13)	(1,639)
Balance at end of period	$ 296	$ 296	$ 296	$ 292	$ 292	$ 292	$ 2	$ 2	$ 2	$ 10	$ 10	$ 10	$ 2	$ 2	$ 2	$ 66	$ 66	$ 3	$ 3	$ 3	$ 163	$ 163	$ 155	$ 155	$ 52	$ 52	$ 52	$ 745	$ 745	$ 2,394	$ 2,394	$ 84	$ 84	$ 1,952	$ 1,952	$ 252	$ 252	$ 96	$ 96	$ 96	$ 113	$ 113	$ 113	$ 10	$ 10	$ 10	$ 9	$ 9	$ 351	$ 351	$ 351	$ 5	$ 5	$ 5	$ 2,872	$ 2,872