GOODWILL AND INTANGIBLE ASSETS (Details 3) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	$ 15,349	$ 15,548
Accumulated amortization of Intangible assets (excluding MSRs)	8,549	8,044
Gross carrying amount of Mortgage servicing rights (MSRs)	2,852	4,554
Gross carrying amount of Intangible assets	18,201	20,102
Accumulated amortization of Intangible assets	8,549	8,044
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	7,504
Net carrying amount of MSRs, balance at beginning of period	4,554
Net carrying amount of Intangible assets, balance at beginning of period	12,058
Acquisitions/divestitures	87
Amortization	(679)
Impairments	(16)
FX and other	(78)
Discontinued Operations	(18)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	6,800
Net carrying amount of MSRs, balance at end of period	2,852
Net carrying amount of Intangible assets, balance at end of period	9,652
Purchased credit card relationships
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	7,617	7,796
Accumulated amortization of Intangible assets (excluding MSRs)	5,205	5,048
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	2,748
Acquisitions/divestitures	6
Amortization	(330)
FX and other	(12)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	2,412
Core deposit intangibles
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	1,340	1,442
Accumulated amortization of Intangible assets (excluding MSRs)	944	959
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	483
Acquisitions/divestitures	4
Amortization	(73)
FX and other	(18)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	396
Other customer relationships
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	835	796
Accumulated amortization of Intangible assets (excluding MSRs)	344	289
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	507
Acquisitions/divestitures	3
Amortization	(39)
FX and other	20
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	491
Present value of future profits
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	235	241
Accumulated amortization of Intangible assets (excluding MSRs)	120	114
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	127
Amortization	(10)
FX and other	(2)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	115
Indefinite-lived intangible assets
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	493	550
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	550
FX and other	(57)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	493
Other:
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	4,829	4,723
Accumulated amortization of Intangible assets (excluding MSRs)	1,936	1,634
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	3,089
Acquisitions/divestitures	74
Amortization	(227)
Impairments	(16)
FX and other	(9)
Discontinued Operations	(18)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	$ 2,893