VARIABLE INTEREST ENTITIES - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Lending to special purpose entities included in loans and leases		$ 154,679	$ 126,405
Other assets		13,089	8,746
LIHTC unfunded commitments included in other liabilities		4,520	3,425
Asset-backed investments included in HTM securities	[1]	9,834	2,242
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Lending to special purpose entities included in loans and leases		4,578	2,646
LIHTC unfunded commitments included in other liabilities		1,046	927
Asset-backed investments included in HTM securities		581	737
Variable Interest Entity, Not Primary Beneficiary | Low Income Housing Tax Credit Partnerships
Variable Interest Entity [Line Items]
Other assets		2,230	1,978
Variable Interest Entity, Not Primary Beneficiary | Renewable Energy Investments
Variable Interest Entity [Line Items]
Other assets		$ 374	$ 429

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