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v3.20.4

Reinsurance - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Property and Casualty Insurance Products |  |  |
Policyholder Benefits and Claims Incurred, Ceded | $ 1,156 | $ 826 | $ 661
Group Insurance Policy [Member] |  |  |
Policyholder Benefits and Claims Incurred, Ceded | $ 63 | $ 73 | $ 116

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- Definition Amount of reduction of provision for policy benefits and costs incurred for policies ceded. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=99397103&loc=d3e6811-158387 + Details
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