PREMISES AND EQUIPMENT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment, Net, by Type [Abstract]
Total premises and equipment	$ 2,515	$ 2,237
Less accumulated depreciation and amortization	(1,194)	(1,171)
Net premises and equipment	1,321	1,066
Property Plant and Equipment Income Statement Disclosures [Abstract]
Total depreciation and amortization of premises and equipment	138	142	$ 167
Land and land improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Total premises and equipment	413	339
Buildings
Property, Plant and Equipment, Net, by Type [Abstract]
Total premises and equipment	847	738
Leasehold improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Total premises and equipment	277	251
Equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Total premises and equipment	$ 978	$ 909