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INVESTMENT SECURITIES - Securities Classified as Current and Long-Term (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | $ 15,392 | $ 13,440
Gross Unrealized Gains | 1 | 218
Gross Unrealized Losses | (1,906) | (161)
Fair Value | 13,487 | 13,497
Common stock | 12 | 475
Total investment securities | 13,499 | 13,972
U.S. Treasury and agency obligations |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 657 | 611
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | (58) | (10)
Fair Value | 599 | 602
Mortgage-backed securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 3,589 | 3,265
Gross Unrealized Gains | 1 | 33
Gross Unrealized Losses | (550) | (69)
Fair Value | 3,040 | 3,229
Tax-exempt municipal securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 769 | 810
Gross Unrealized Gains | 0 | 33
Gross Unrealized Losses | (54) | (2)
Fair Value | 715 | 841
Residential |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 482 | 373
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (78) | (6)
Fair Value | 404 | 367
Commercial |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 1,562 | 1,394
Gross Unrealized Gains | 0 | 27
Gross Unrealized Losses | (154) | (11)
Fair Value | 1,408 | 1,410
Asset-backed securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 1,915 | 1,346
Gross Unrealized Gains | 0 | 6
Gross Unrealized Losses | (81) | (4)
Fair Value | 1,834 | 1,348
Corporate debt securities |  |
Investment Securities, Available-for-sale Amortized Cost to Fair Value |  |
Amortized Cost | 6,418 | 5,641
Gross Unrealized Gains | 0 | 118
Gross Unrealized Losses | (931) | (59)
Fair Value | $ 5,487 | $ 5,700

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