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SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements by Contractual Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	$ 729,792	$ 563,539
Securities loaned	52,336	34,315
Total	782,128	597,854
Open and overnight
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	385,121	299,527
Securities loaned	40,317	25,898
Total	425,438	325,425
Up to 30 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	201,773	154,036
Securities loaned	525	213
Total	202,298	154,249
31–90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	68,688	46,635
Securities loaned	2,143	1,007
Total	70,831	47,642
Greater than 90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	74,210	63,341
Securities loaned	9,351	7,197
Total	$ 83,561	$ 70,538

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