INVESTMENT SECURITIES - Schedule of Contractual Maturities of Debt Securities Available for Sale (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Amortized Cost
Due within one year	$ 1,070
Due after one year through five years	5,565
Due after five years through ten years	4,292
Due after ten years	1,287
Mortgage and asset-backed securities	7,804
Amortized Cost	20,018	$ 18,302
Fair Value
Due within one year	1,067
Due after one year through five years	5,395
Due after five years through ten years	3,978
Due after ten years	1,069
Mortgage and asset-backed securities	7,126
Fair Value	$ 18,635	$ 17,008

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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