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Loss and Loss Adjustment Expense Reserves (Schedule of Insurance Loss Recoverable) (Detail) - Insurance Loss Recoverable [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Roll forward of Insurance Loss Recoverable [Line Items] |  |
Gross Reserve beginning balance, Insurance loss recoverable | $ 1,296 | $ 1,677
Collections for Cases | (1,608) | (266)
Accretion of Recoveries | 7 | 15
Changes in Discount Rates | (22) | 25
Changes in Assumptions | 464 | (155)
Gross Reserve ending balance, Insurance loss recoverable | $ 137 | $ 1,296

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- Definition Carrying amount as of the balance sheet date of paid insurance policy claims and LAE expense expected to be recovered. + References No definition available. + Details
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- Definition Roll forward of Insurance Loss Recoverable [Line Items] + References No definition available. + Details
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- Details
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