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v3.22.1

General (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Accounting Standards Update [Extensible Enumeration] | Accounting Standards Update 2018-12 [Member] |
Minimum | Pro Forma | Accumulated Other Comprehensive (Loss) Income | Cumulative Effect, Period of Adoption, Adjustment |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | $ 2,200
Maximum | Pro Forma | Accumulated Other Comprehensive (Loss) Income | Cumulative Effect, Period of Adoption, Adjustment |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | $ 2,500
CNAF Consolidated | Loews |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Noncontrolling interest, ownership percentage by parent (as a percent) | 89.60% |

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