INVESTMENT SECURITIES - Schedule of Contractual Maturities of Debt Securities Available for Sale (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Amortized Cost
Due within one year	$ 854
Due after one year through five years	5,388
Due after five years through ten years	4,303
Due after ten years	1,162
Mortgage and asset-backed securities	7,407
Amortized Cost	19,114	$ 20,018
Fair Value
Due within one year	851
Due after one year through five years	5,285
Due after five years through ten years	4,136
Due after ten years	960
Mortgage and asset-backed securities	6,867
Fair Value	$ 18,099	$ 18,635

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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