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Investments - Schedule of Maturities for Fixed Income Securities (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized cost, net |  |
Due in one year or less | $ 3,374 | $ 3,422
Due after one year through five years | 23,324 | 23,218
Due after five years through ten years | 14,894 | 12,553
Due after ten years | 8,406 | 8,717
Subtotal | 49,998 | 47,910
ABS | 1,839 | 1,739
Amortized cost, net | 51,837 | 49,649
Fair value |  |
Due in one year or less | 3,333 | 3,374
Due after one year through five years | 22,678 | 22,614
Due after five years through ten years | 14,560 | 12,273
Due after ten years | 8,360 | 8,859
Subtotal | 48,931 | 47,120
ABS | 1,846 | 1,745
Total | $ 50,777 | $ 48,865

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- Definition This item represents the total of all debt securities grouped by maturity dates excluding asset-backed securities, residential mortgage-backed securities and commercial mortgage-backed securities, at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are classified neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after rolling tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 + Details
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