GOODWILL AND CORE DEPOSIT INTANGIBLES - Schedule of Intangible Liability Accumulated Amortization of (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Below market lease, gross	$ 52	$ 52
Accumulated amortization	(34)	(28)
Balance, net of accumulated amortization	$ 18	$ 24	$ 36

Amount of accumulated amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.

No definition available.

Name:	us-gaap_BelowMarketLeaseAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant