DERIVATIVES ACTIVITIES (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Net investment hedge under ASC 815 (SFAS 133)
Derivatives
Derivative notionals	$ 6,450	$ 4,888
Hedging instruments under ASC 815 (SFAS 133)
Derivatives
Derivative notionals	253,193	207,893
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contracts
Derivatives
Derivative notionals	150,843	114,296
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contracts | Swaps
Derivatives
Derivative notionals	150,823	114,296
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contracts | Futures and forwards
Derivatives
Derivative notionals	20
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contracts
Derivatives
Derivative notionals	102,255	93,243
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contracts | Swaps
Derivatives
Derivative notionals	22,402	22,207
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contracts | Futures and forwards
Derivatives
Derivative notionals	79,646	70,484
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contract options | Written or Sold
Derivatives
Derivative notionals	101	96
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contract options | Purchased
Derivatives
Derivative notionals	106	456
Hedging instruments under ASC 815 (SFAS 133) | Credit derivatives
Derivatives
Derivative notionals	95	354
Hedging instruments under ASC 815 (SFAS 133) | Credit derivatives | Purchased
Derivatives
Derivative notionals	95	354
Other derivative instruments, Management hedges
Derivatives
Derivative notionals	215,026	251,676
Other derivative instruments, Management hedges | Interest rate contracts
Derivatives
Derivative notionals	160,972	176,172
Other derivative instruments, Management hedges | Interest rate contracts | Swaps
Derivatives
Derivative notionals	93,286	99,434
Other derivative instruments, Management hedges | Interest rate contracts | Futures and forwards
Derivatives
Derivative notionals	61,398	45,856
Other derivative instruments, Management hedges | Interest rate contract options | Written or Sold
Derivatives
Derivative notionals	3,103	22,992
Other derivative instruments, Management hedges | Interest rate contract options | Purchased
Derivatives
Derivative notionals	3,185	7,890
Other derivative instruments, Management hedges | Foreign exchange contracts
Derivatives
Derivative notionals	34,310	53,763
Other derivative instruments, Management hedges | Foreign exchange contracts | Swaps
Derivatives
Derivative notionals	20,013	16,900
Other derivative instruments, Management hedges | Foreign exchange contracts | Futures and forwards
Derivatives
Derivative notionals	14,226	33,768
Other derivative instruments, Management hedges | Foreign exchange contract options | Written or Sold
Derivatives
Derivative notionals		989
Other derivative instruments, Management hedges | Foreign exchange contract options | Purchased
Derivatives
Derivative notionals	71	2,106
Other derivative instruments, Management hedges | Credit derivatives
Derivatives
Derivative notionals	19,744	21,741
Other derivative instruments, Management hedges | Credit derivatives | Purchased
Derivatives
Derivative notionals	19,744	21,741
Other derivative instruments, Trading derivatives
Derivatives
Derivative notionals	61,289,007	52,358,175
Other derivative instruments, Trading derivatives | Interest rate contracts
Derivatives
Derivative notionals	50,559,267	42,169,179
Other derivative instruments, Trading derivatives | Interest rate contracts | Swaps
Derivatives
Derivative notionals	36,352,196	30,050,856
Other derivative instruments, Trading derivatives | Interest rate contracts | Futures and forwards
Derivatives
Derivative notionals	6,129,742	4,823,370
Other derivative instruments, Trading derivatives | Interest rate contract options | Written or Sold
Derivatives
Derivative notionals	4,105,632	3,752,905
Other derivative instruments, Trading derivatives | Interest rate contract options | Purchased
Derivatives
Derivative notionals	3,971,697	3,542,048
Other derivative instruments, Trading derivatives | Foreign exchange contracts
Derivatives
Derivative notionals	7,348,108	6,437,697
Other derivative instruments, Trading derivatives | Foreign exchange contracts | Swaps
Derivatives
Derivative notionals	1,552,292	1,393,368
Other derivative instruments, Trading derivatives | Foreign exchange contracts | Futures and forwards
Derivatives
Derivative notionals	3,728,511	3,484,193
Other derivative instruments, Trading derivatives | Foreign exchange contract options | Written or Sold
Derivatives
Derivative notionals	1,037,433	781,698
Other derivative instruments, Trading derivatives | Foreign exchange contract options | Purchased
Derivatives
Derivative notionals	1,029,872	778,438
Other derivative instruments, Trading derivatives | Equity contracts
Derivatives
Derivative notionals	723,695	713,689
Other derivative instruments, Trading derivatives | Equity contracts | Swaps
Derivatives
Derivative notionals	100,019	96,039
Other derivative instruments, Trading derivatives | Equity contracts | Futures and forwards
Derivatives
Derivative notionals	23,161	16,171
Other derivative instruments, Trading derivatives | Equity contract options | Written or Sold
Derivatives
Derivative notionals	333,945	320,243
Other derivative instruments, Trading derivatives | Equity contract options | Purchased
Derivatives
Derivative notionals	266,570	281,236
Other derivative instruments, Trading derivatives | Commodity and other contracts
Derivatives
Derivative notionals	319,351	278,922
Other derivative instruments, Trading derivatives | Commodity and other contracts | Swaps
Derivatives
Derivative notionals	22,978	27,323
Other derivative instruments, Trading derivatives | Commodity and other contracts | Futures and forwards
Derivatives
Derivative notionals	98,265	75,897
Other derivative instruments, Trading derivatives | Commodity and other contract options | Written or Sold
Derivatives
Derivative notionals	100,482	86,418
Other derivative instruments, Trading derivatives | Commodity and other contract options | Purchased
Derivatives
Derivative notionals	97,626	89,284
Other derivative instruments, Trading derivatives | Credit derivatives
Derivatives
Derivative notionals	2,338,586	2,758,688
Other derivative instruments, Trading derivatives | Credit derivatives | Written or Sold
Derivatives
Derivative notionals	1,143,363	1,346,494
Other derivative instruments, Trading derivatives | Credit derivatives | Purchased
Derivatives
Derivative notionals	$ 1,195,223	$ 1,412,194