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Investments (Securities Held In Unrealized Loss Position And Insured By Financial Guarantor) (Detail) - Financial Guarantee [Member] $ in Millions | Sep. 30, 2022 USD ($)
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Schedule Of Investments [Line Items] |
Total available-for-sale, fair value | $ 173
Gross unrealized losses | (48)
Loss and loss adjustment expense reserves | 111
Mortgage-backed [Member] |
Schedule Of Investments [Line Items] |
Total available-for-sale, fair value | 93
Gross unrealized losses | (17)
Loss and loss adjustment expense reserves | 111
Corporate Obligations [Member] |
Schedule Of Investments [Line Items] |
Total available-for-sale, fair value | 74
Gross unrealized losses | (31)
Loss and loss adjustment expense reserves | 0
Other [Member] |
Schedule Of Investments [Line Items] |
Total available-for-sale, fair value | $ 6

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- Definition Amount of accumulated pre-tax unrealized losses before deducting pre-tax unrealized gains on investments in available-for-sale securities impacting investments. + References No definition available. + Details
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- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events by financial guarantor that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References No definition available. + Details
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- Details
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