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Guarantees and Contingent Liabilities (Details) | 9 Months Ended
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Sep. 30, 2024 USD ($) claim
Holland Hewitt v. Allstate Life Insurance Company |
Guarantor Obligations [Line Items] |
Number of putative class actions | claim | 2
Minimum |
Guarantor Obligations [Line Items] |
Loss contingencies, reasonably possible pretax loss exposure in excess of the amount accrued | $ 0
Maximum |
Guarantor Obligations [Line Items] |
Loss contingencies, reasonably possible pretax loss exposure in excess of the amount accrued | $ 68,000,000

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