GOODWILL AND INTANGIBLE ASSETS - Other Intangibles (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross	$ 294	$ 270
Accumulated Amortization	148	113
Net	$ 146	157
Core deposits
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	10 years
Gross	$ 144	144
Accumulated Amortization	66	44
Net	78	100
Acquired technology
Finite-Lived Intangible Assets [Line Items]
Gross	23	23
Accumulated Amortization	22	21
Net	1	2
Acquired relationships
Finite-Lived Intangible Assets [Line Items]
Gross	52	52
Accumulated Amortization	31	26
Net	21	26
Naming Rights
Finite-Lived Intangible Assets [Line Items]
Gross	33	33
Accumulated Amortization	16	12
Net	17	21
Other
Finite-Lived Intangible Assets [Line Items]
Gross	42	18
Accumulated Amortization	13	10
Net	$ 29	$ 8
Minimum | Acquired technology
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	5 years
Minimum | Acquired relationships
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	2 years
Minimum | Naming Rights
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	5 years
Minimum | Other
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	2 years
Maximum | Acquired technology
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	7 years
Maximum | Acquired relationships
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	15 years
Maximum | Naming Rights
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	10 years
Maximum | Other
Finite-Lived Intangible Assets [Line Items]
Amortizable Lives	8 years