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v3.22.2.2

Reserve for Unpaid Losses and Loss Adjustment Expenses - PC Additional Information (Details) - USD ($) $ in Millions |  | 9 Months Ended | 12 Months Ended | 69 Months Ended |
--- | --- | --- | --- | --- | ---
May 23, 2019 | Sep. 30, 2022 | Dec. 31, 2016 | Sep. 30, 2022 | Dec. 31, 2021
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Liability for Claims and Claims Adjustment Expense |  | $ 40,601 |  | $ 40,601 | $ 39,659
Reinsurance Recoverables, Gross |  | 6,749 |  | 6,749 | $ 6,622
Abuse Claims | General Liability [Member] |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Liability for Claims and Claims Adjustment Expense |  | 787 |  | 787 |
Reinsurance Contract [Axis]: Adverse Development Cover Navigators Group |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Payments for Reinsurance | $ 91 |  |  |  |
Change in Deferred Gain on Retroactive Reinsurance |  | 209 |  | 209 |
Reinsurance Recoverables, Gross |  | 300 |  | 300 |
Reinsurance Contract [Axis]: Adverse Development Cover Navigators Group | Retention Layer for Reserve for the Covered Liabilities as of the Inception Date [Member] |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Reinsurance, Amount Retained, Per Policy |  | 1,816 |  |  |
Reinsurance Contract [Axis]: Adverse Development Cover Navigators Group | Retention Layer Above Reserve for the Covered Liabilities as of the Inception Date [Member] |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Reinsurance, Amount Retained, Per Policy |  | 100 |  |  |
Reinsurance Contract [Axis]: Asbestos and Environmental |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Payments for Reinsurance |  |  | $ 650 |  |
Reinsurance, Amount Retained, Per Policy |  |  | $ 1,700 |  |
Reinsurance Contract [Axis]: Asbestos and Environmental | Asbestos and Environmental |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Policyholder Benefits and Claims Incurred, Assumed |  |  |  | 1,015 |
Change in Deferred Gain on Retroactive Reinsurance |  | 365 |  | $ 365 |
Reinsurance Contract [Axis]: Asbestos and Environmental | Remaining [Member] | Asbestos and Environmental |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Reinsurance, Excess Retention, Amount Reinsured, Per Policy |  | 485 |  |  |
Maximum | Reinsurance Contract [Axis]: Adverse Development Cover Navigators Group |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Reinsurance, Excess Retention, Amount Reinsured, Per Policy |  | 300 |  |  |
Maximum | Reinsurance Contract [Axis]: Asbestos and Environmental |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Reinsurance, Excess Retention, Amount Reinsured, Per Policy |  | $ 1,500 |  |  |

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