GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Goodwill
Balance of goodwill at beginning of period	$ 21,299
Impairment	(535)	$ 0
Divestiture	(873)
Foreign currency translation	(26)
Balance of goodwill at end of period	19,865
Institutional Clients Group
Goodwill
Balance of goodwill at beginning of period	9,215
Impairment	0
Divestiture	0
Foreign currency translation	(44)
Balance of goodwill at end of period	9,171
Personal Banking and Wealth Management
Goodwill
Balance of goodwill at beginning of period	9,717
Impairment	0
Divestiture	0
Foreign currency translation	18
Balance of goodwill at end of period	9,735
Legacy Franchises
Goodwill
Balance of goodwill at beginning of period	2,367
Impairment	(535)
Divestiture	(873)
Foreign currency translation	0
Balance of goodwill at end of period	959
Impairment loss, after-tax	$ 489

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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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.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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