VARIABLE INTEREST ENTITIES - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions		Jun. 30, 2022	Dec. 31, 2021
Variable Interest Entity
Lending to special purpose entities included in loans and leases		$ 154,208	$ 126,405
Investments included in other assets		13,696	8,810
LIHTC unfunded commitments included in other liabilities		4,252	3,425
Asset-backed investments included in HTM securities	[1]	9,567	2,242
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity
Lending to special purpose entities included in loans and leases		3,341	2,646
LIHTC unfunded commitments included in other liabilities		1,045	927
Asset-backed investments included in HTM securities		646	737
Variable Interest Entity, Not Primary Beneficiary | Low Income Housing Tax Credit Partnerships
Variable Interest Entity
Investments included in other assets		2,175	1,978
Variable Interest Entity, Not Primary Beneficiary | Renewable Energy
Variable Interest Entity
Investments included in other assets		$ 401	$ 429

[1] Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.