GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Goodwill
Balance of goodwill at beginning of period	$ 22,058	$ 22,659	$ 22,256
Foreign exchange translation and other	129	(601)	419
Divestiture			(16)
Balance of goodwill at end of period	22,187	22,058	22,659
Global Consumer Banking
Goodwill
Balance of goodwill at beginning of period	12,742	12,968	12,784
Foreign exchange translation and other	7	(226)	184
Divestiture			0
Balance of goodwill at end of period	12,749	12,742	12,968
Institutional Clients Group
Goodwill
Balance of goodwill at beginning of period	9,316	9,691	9,456
Foreign exchange translation and other	122	(375)	235
Divestiture			0
Balance of goodwill at end of period	9,438	9,316	9,691
Corporate/Other
Goodwill
Balance of goodwill at beginning of period	0	0	16
Foreign exchange translation and other	0	0	0
Divestiture			(16)
Balance of goodwill at end of period	$ 0	$ 0	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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