VARIABLE INTEREST ENTITIES - Schedule of Consolidated Variable Interest Entities (Details) - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023
ASSETS:
Cash and due from banks	[1]	$ 1,409	$ 1,794
Interest-bearing deposits in banks	[1]	635	405
Net loans and leases	[1]	137,142	143,861
Other assets	[1]	13,941	13,359
TOTAL ASSETS		217,521	221,964
LIABILITIES:
Long-term borrowed funds	[1]	12,401	13,467
Other liabilities	[1]	4,870	4,746
TOTAL LIABILITIES		193,267	197,622
Variable Interest Entity, Primary Beneficiary
ASSETS:
Cash and due from banks		0	13
Interest-bearing deposits in banks		209	106
Net loans and leases		3,843	3,194
Other assets		21	14
TOTAL ASSETS		4,073	3,327
LIABILITIES:
Long-term borrowed funds		3,375	2,692
Other liabilities		8	8
TOTAL LIABILITIES		$ 3,383	$ 2,700

[1] Includes amounts in consolidated VIEs. See Note 11 for additional information.