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Expected Loss to be Paid (Recovered) - Net Expected Loss to be Paid (Recovered) Roll Forward (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Present Value of Net Expected Loss and Loss Adjustment Expenses to be Paid [Roll Forward] |  |  |
Net expected loss to be paid (recovered), beginning of period | $ 411 | $ 529 | $ 737
Accretion of discount | 16 | 7 | 9
Changes in discount rates | (115) | (33) | 13
Changes in timing and assumptions | (26) | (261) | 123
Total economic loss development (benefit) | (125) | (287) | 145
Net (paid) recovered losses | 236 | 169 | (353)
Net expected loss to be paid (recovered), end of period | $ 522 | $ 411 | $ 529
Weighted average risk free discount rate | 4.08% | 1.02% |
U.S. |  |  |
Present Value of Net Expected Loss and Loss Adjustment Expenses to be Paid [Roll Forward] |  |  |
Percent of total non-U.S. net expected losses to paid | 98.50% | 97.20% |
Minimum |  |  |
Present Value of Net Expected Loss and Loss Adjustment Expenses to be Paid [Roll Forward] |  |  |
Risk free discount rate | 3.82% | 0.00% |
Maximum |  |  |
Present Value of Net Expected Loss and Loss Adjustment Expenses to be Paid [Roll Forward] |  |  |
Risk free discount rate | 4.69% | 1.98% |

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