GOODWILL AND INTANGIBLE ASSETS (Details 3) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	$ 15,561	$ 15,548
Accumulated amortization of Intangible assets (excluding MSRs)	8,425	8,044
Gross carrying amount of Mortgage servicing rights (MSRs)	4,258	4,554
Gross carrying amount of Intangible assets	19,819	20,102
Accumulated amortization of Intangible assets	8,425	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	53
Amortization	(456)
Impairments	(16)
FX and other	69
Discontinued Operations	(18)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	7,136
Net carrying amount of MSRs, balance at end of period	4,258
Net carrying amount of Intangible assets, balance at end of period	11,394
Purchased credit card relationships
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	7,757	7,796
Accumulated amortization of Intangible assets (excluding MSRs)	5,218	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	(221)
FX and other	6
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	2,539
Core deposit intangibles
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	1,431	1,442
Accumulated amortization of Intangible assets (excluding MSRs)	989	959
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	483
Amortization	(49)
FX and other	8
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	442
Other customer relationships
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	804	796
Accumulated amortization of Intangible assets (excluding MSRs)	312	289
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	507
Amortization	(26)
FX and other	11
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	492
Present value of future profits
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	244	241
Accumulated amortization of Intangible assets (excluding MSRs)	123	114
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	127
Amortization	(7)
FX and other	1
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	121
Indefinite-lived intangible assets
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	581	550
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	550
FX and other	31
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	581
Other:
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	4,744	4,723
Accumulated amortization of Intangible assets (excluding MSRs)	1,783	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	47
Amortization	(153)
Impairments	(16)
FX and other	12
Discontinued Operations	(18)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	$ 2,961