GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
Jun. 30, 2026	Mar. 31, 2026
Goodwill
Balance at December 31, 2025	$ 18,997	$ 19,098
Foreign currency translation	15	(101)
Balance at June 30, 2026	19,012	18,997
All Other
Goodwill
Balance at December 31, 2025	302	301
Foreign currency translation	7	1
Balance at June 30, 2026	309	302
Services \| Operating Segments
Goodwill
Balance at December 31, 2025	2,110	2,141
Foreign currency translation	1	(31)
Balance at June 30, 2026	2,111	2,110
Markets \| Operating Segments
Goodwill
Balance at December 31, 2025	5,758	5,833
Foreign currency translation	(19)	(75)
Balance at June 30, 2026	5,739	5,758
Banking \| Operating Segments
Goodwill
Balance at December 31, 2025	1,028	1,028
Foreign currency translation	4	0
Balance at June 30, 2026	1,032	1,028
USCC
Goodwill
Transfers in (out)	(609)
USCC \| Operating Segments
Goodwill
Balance at December 31, 2025	4,733	4,733
Foreign currency translation	0	0
Balance at June 30, 2026	4,733	4,733
Wealth
Goodwill
Transfers in (out)	609
Wealth \| Operating Segments
Goodwill
Balance at December 31, 2025	5,066	5,062
Foreign currency translation	22	4
Balance at June 30, 2026	$ 5,088	$ 5,066

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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