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Insurance - Analysis of changes in the liability for losses and loss adjustment expenses, net of reinsurance (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Analysis of changes in the liability for losses and loss adjustment expenses, net of reinsurance |  |
Less reinsurance recoverables, net of allowance | $ 4,288 | $ 3,767
Net liability at beginning of year | 8,799 | 8,207
Provision for losses and LAE occurring in the current period | 962 | 883
Net decrease in the provision for claims of prior years | (50) | (63)
Total losses and LAE incurred | 912 | 820
Payments for losses and LAE of: |  |
Current year | (94) | (66)
Prior years | (895) | (815)
Total payments | (989) | (881)
Foreign currency translation and other | 1 | 1
Net liability at end of period | 8,723 | 8,147
Add back reinsurance recoverables, net of allowance | $ 4,327 | $ 3,614

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