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AVAILABLE-FOR-SALE DEBT SECURITIES AND EQUITY SECURITIES - Summary of Available-for-Sale Debt Securities In Continuous Unrealized Loss Position (Details) $ in Millions | Dec. 31, 2023 USD ($)
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Gross Unrealized Losses |
Less than 12 months | $ (2)
12 months or longer | (8)
Total | (10)
Estimated Fair Value |
Less than 12 months | 727
12 months or longer | 624
Total | 1,351
U.S. treasury securities |
Gross Unrealized Losses |
Less than 12 months | 0
12 months or longer | (1)
Total | (1)
Estimated Fair Value |
Less than 12 months | 161
12 months or longer | 48
Total | 209
U.S. government agencies securities |
Gross Unrealized Losses |
Less than 12 months | 0
12 months or longer | 0
Total | 0
Estimated Fair Value |
Less than 12 months | 106
12 months or longer | 2
Total | 108
Non-U.S. government securities |
Gross Unrealized Losses |
Less than 12 months | 0
12 months or longer | 0
Total | 0
Estimated Fair Value |
Less than 12 months | 5
12 months or longer | 5
Total | 10
Corporate debt securities |
Gross Unrealized Losses |
Less than 12 months | (1)
12 months or longer | (7)
Total | (8)
Estimated Fair Value |
Less than 12 months | 333
12 months or longer | 546
Total | 878
Residential mortgage and asset-backed securities |
Gross Unrealized Losses |
Less than 12 months | 0
12 months or longer | 0
Total | 0
Estimated Fair Value |
Less than 12 months | 123
12 months or longer | 24
Total | $ 147

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