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Investments - Amortized Cost and Fair Value of Fixed Maturity Available-for-Sale Securities (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Amortized Cost |  |
Amortized Cost | $ 33,836 | $ 30,705
Fair Value |  |
Total fixed maturity available-for-sale securities, Fair Value | 30,432 | 31,990
Other securities, which provide for periodic payments: |  |
Amortized Cost |  |
Other securities which provide for periodic payments, Amortized Cost | 14,091 | 11,962
Fair Value |  |
Other securities which provide for periodic payments, Fair Value | 13,429 | 12,442
Corporates, Non-structured Hybrids, Municipal and Government securities: |  |
Amortized Cost |  |
Due in one year or less | 524 | 426
Due after one year through five years | 3,386 | 2,998
Due after five years through ten years | 2,103 | 2,389
Due after ten years | 13,732 | 12,930
Subtotal, Amortized Cost | 19,745 | 18,743
Fair Value |  |
Due in one year or less | 523 | 431
Due after one year through five years | 3,218 | 3,051
Due after five years through ten years | 1,918 | 2,458
Due after ten years | 11,344 | 13,608
Subtotal, Fair Value | 17,003 | 19,548
Asset-backed securities |  |
Amortized Cost |  |
Other securities which provide for periodic payments, Amortized Cost | 9,965 | 8,516
Amortized Cost | 9,965 | 8,516
Fair Value |  |
Other securities which provide for periodic payments, Fair Value | 9,448 | 8,695
Total fixed maturity available-for-sale securities, Fair Value | 9,448 | 8,695
Commercial mortgage-backed securities |  |
Amortized Cost |  |
Other securities which provide for periodic payments, Amortized Cost | 3,123 | 2,684
Amortized Cost | 3,123 | 2,684
Fair Value |  |
Other securities which provide for periodic payments, Fair Value | 3,053 | 2,979
Total fixed maturity available-for-sale securities, Fair Value | 3,053 | 2,979
Structured hybrids |  |
Amortized Cost |  |
Other securities which provide for periodic payments, Amortized Cost | 26 | 31
Fair Value |  |
Other securities which provide for periodic payments, Fair Value | 26 | 37
Residential mortgage-backed securities |  |
Amortized Cost |  |
Other securities which provide for periodic payments, Amortized Cost | 977 | 731
Fair Value |  |
Other securities which provide for periodic payments, Fair Value | $ 902 | $ 731

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