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Expected Loss to be Paid (Recovered) - Net Expected Loss to be Paid (Recovered) and Net Economic Loss Development (Benefit) by Accounting Model (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Schedule of Expected Losses to be Paid [Line Items] |  |  |  |
Net Expected Loss to be Paid (Recovered) | $ 432 | $ 472 | $ 411 | $ 529
Net economic loss development (benefit) | (44) | 13 |  |
Insurance |  |  |  |
Schedule of Expected Losses to be Paid [Line Items] |  |  |  |
Net Expected Loss to be Paid (Recovered) | 388 |  | 364 |
Net economic loss development (benefit) | (44) | 16 |  |
FG VIEs and other |  |  |  |
Schedule of Expected Losses to be Paid [Line Items] |  |  |  |
Net Expected Loss to be Paid (Recovered) | 38 |  | 42 |
Net economic loss development (benefit) | (4) | (6) |  |
Credit derivatives |  |  |  |
Schedule of Expected Losses to be Paid [Line Items] |  |  |  |
Net Expected Loss to be Paid (Recovered) | 6 |  | $ 5 |
Net economic loss development (benefit) | $ 4 | $ 3 |  |

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