GOODWILL AND INTANGIBLE ASSETS (Details 3) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	$ 14,985		$ 15,116
Accumulated amortization of Intangible assets (excluding MSRs)	10,460		10,060
Gross carrying amount of Mortgage servicing rights (MSRs)	2,093		2,718
Gross carrying amount of Intangible assets	17,078		17,834
Accumulated amortization of Intangible assets	10,460		10,060
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	5,056
Net carrying amount of MSRs, balance at beginning of period	2,718	[1]
Net carrying amount of Intangible assets, balance at beginning of period	7,774
Acquisitions/divestitures	(3)
Amortization	(573)
Impairments	(2)
FX and other	47	[2]
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	4,525
Net carrying amount of MSRs, balance at end of period	2,093	[1]
Net carrying amount of Intangible assets, balance at end of period	6,618
Indefinite-lived intangible assets
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	314		323
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	323
Acquisitions/divestitures	(2)
FX and other	(7)	[2]
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	314
Purchased credit card relationships
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	7,521		7,552
Accumulated amortization of Intangible assets (excluding MSRs)	6,229		6,006
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	1,546
Acquisitions/divestitures	(9)
Amortization	(247)
FX and other	2	[2]
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	1,292
Core deposit intangibles
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	1,210		1,255
Accumulated amortization of Intangible assets (excluding MSRs)	1,059		1,052
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	203
Acquisitions/divestitures	(6)
Amortization	(44)
FX and other	(2)	[2]
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	151
Other customer relationships
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	615		675
Accumulated amortization of Intangible assets (excluding MSRs)	344		389
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	286
Acquisitions/divestitures	14
Amortization	(21)
FX and other	(8)	[2]
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	271
Present value of future profits
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	237		238
Accumulated amortization of Intangible assets (excluding MSRs)	154		146
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	92
Amortization	(9)
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	83
Other
Finite and indefinite-lived intangible assets.
Gross carrying amount of Intangible assets (excluding MSRs)	5,088	[3]	5,073	[3]
Accumulated amortization of Intangible assets (excluding MSRs)	2,674	[3]	2,467	[3]
Finite and indefinite-lived intangible assets:
Net carrying amount of Intangible assets (excluding MSRs), balance at beginning of period	2,606	[3]
Amortization	(252)
Impairments	(2)
FX and other	62	[2]
Net carrying amount of Intangible assets (excluding MSRs), balance at end of period	$ 2,414	[3]

[1] See Note 20 to the Consolidated Financial Statements for the roll-forward of MSRs.

[2] Includes foreign exchange translation and purchase accounting adjustments.

[3] Includes contract-related intangible assets.