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INVESTMENT SECURITIES - Classified as Current and Long-Term (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | $ 15,946 | $ 13,440
Gross Unrealized Gains | 9 | 218
Gross Unrealized Losses | (1,701) | (161)
Fair Value | 14,254 | 13,497
Common stock | 7 | 475
Total investment securities | 14,261 | 13,972
U.S. Treasury and agency obligations |  |
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | 1,093 | 611
Gross Unrealized Gains | 1 | 1
Gross Unrealized Losses | (55) | (10)
Fair Value | 1,039 | 602
Mortgage-backed securities |  |
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | 3,697 | 3,265
Gross Unrealized Gains | 4 | 33
Gross Unrealized Losses | (471) | (69)
Fair Value | 3,230 | 3,229
Tax-exempt municipal securities |  |
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | 765 | 810
Gross Unrealized Gains | 0 | 33
Gross Unrealized Losses | (37) | (2)
Fair Value | 728 | 841
Residential |  |
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | 477 | 373
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (76) | (6)
Fair Value | 401 | 367
Commercial |  |
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | 1,554 | 1,394
Gross Unrealized Gains | 0 | 27
Gross Unrealized Losses | (155) | (11)
Fair Value | 1,399 | 1,410
Asset-backed securities |  |
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | 1,809 | 1,346
Gross Unrealized Gains | 1 | 6
Gross Unrealized Losses | (79) | (4)
Fair Value | 1,731 | 1,348
Corporate debt securities |  |
Debt Securities Amortized Cost to Fair Value |  |
Amortized Cost | 6,551 | 5,641
Gross Unrealized Gains | 3 | 118
Gross Unrealized Losses | (828) | (59)
Fair Value | $ 5,726 | $ 5,700

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