GOODWILL AND INTANGIBLE ASSETS - Goodwill Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Beginning balance	$ 8,188	$ 8,173
Business acquisitions		15
Divestitures	(1)
Ending balance	8,187	8,188
Consumer Banking
Goodwill [Roll Forward]
Beginning balance	2,678	2,673
Business acquisitions		5
Divestitures	0
Ending balance	2,678	2,678
Commercial Banking
Goodwill [Roll Forward]
Beginning balance	5,510	5,500
Business acquisitions		10
Divestitures	(1)
Ending balance	$ 5,509	$ 5,510