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INVESTMENT SECURITIES - Schedule of Investment Securities Classified as Current and Long-Term (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | $ 18,040 | $ 20,018
Gross Unrealized Gains | 55 | 26
Gross Unrealized Losses | (919) | (1,409)
Fair Value | 17,176 | 18,635
U.S. Treasury and agency obligations |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 2,713 | 3,336
Gross Unrealized Gains | 2 | 1
Gross Unrealized Losses | (40) | (110)
Fair Value | 2,675 | 3,227
Mortgage-backed securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 3,881 | 4,504
Gross Unrealized Gains | 6 | 0
Gross Unrealized Losses | (363) | (509)
Fair Value | 3,524 | 3,995
Tax-exempt municipal securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 456 | 548
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (17) | (22)
Fair Value | 439 | 526
Residential |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 616 | 586
Gross Unrealized Gains | 3 | 0
Gross Unrealized Losses | (49) | (64)
Fair Value | 570 | 522
Commercial |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 1,200 | 1,290
Gross Unrealized Gains | 2 | 1
Gross Unrealized Losses | (53) | (85)
Fair Value | 1,149 | 1,206
Asset-backed securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 1,029 | 1,424
Gross Unrealized Gains | 6 | 3
Gross Unrealized Losses | (13) | (24)
Fair Value | 1,022 | 1,403
Corporate debt securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 8,145 | 8,330
Gross Unrealized Gains | 36 | 21
Gross Unrealized Losses | (384) | (595)
Fair Value | $ 7,797 | $ 7,756

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