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INVESTMENT SECURITIES - Securities Classified as Current and Long-Term (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | $ 19,267 | $ 18,302
Gross Unrealized Gains | 30 | 34
Gross Unrealized Losses | (1,485) | (1,328)
Fair Value | 17,812 | 17,008
U.S. Treasury and agency obligations |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 3,080 | 2,717
Gross Unrealized Gains | 1 | 1
Gross Unrealized Losses | (92) | (51)
Fair Value | 2,989 | 2,667
Mortgage-backed securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 4,264 | 3,946
Gross Unrealized Gains | 4 | 1
Gross Unrealized Losses | (509) | (425)
Fair Value | 3,759 | 3,522
Tax-exempt municipal securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 770 | 879
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | (27) | (22)
Fair Value | 743 | 858
Residential |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 451 | 465
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | (70) | (66)
Fair Value | 381 | 400
Commercial |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 1,374 | 1,471
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (112) | (126)
Fair Value | 1,262 | 1,345
Asset-backed securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 1,531 | 1,813
Gross Unrealized Gains | 2 | 2
Gross Unrealized Losses | (35) | (44)
Fair Value | 1,498 | 1,771
Corporate debt securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 7,797 | 7,011
Gross Unrealized Gains | 23 | 28
Gross Unrealized Losses | (640) | (594)
Fair Value | $ 7,180 | $ 6,445

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