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v3.22.1

Reinsurance and indemnification - Claims expense, life contract benefits and interest credited to contractholder funds (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Reductions to costs and expenses due to reinsurance ceded amounts |  |  |
Unearned premiums | $ 20,248 |  | $ 19,844
Nationwide Reinsurance Program |  |  |
Reductions to costs and expenses due to reinsurance ceded amounts |  |  |
Unearned premiums |  | $ 75 |
Property and casualty insurance claims and claims expense |  |  |
Reductions to costs and expenses due to reinsurance ceded amounts |  |  |
Ceded losses incurred | (109) | (1,593) |
Property and casualty insurance claims and claims expense | Michigan Catastrophic Claim Association |  |  |
Reductions to costs and expenses due to reinsurance ceded amounts |  |  |
Ceded losses incurred | (12) | (386) |
Property and casualty insurance claims and claims expense | Nationwide Reinsurance Program |  |  |
Reductions to costs and expenses due to reinsurance ceded amounts |  |  |
Ceded losses incurred |  | (955) |
Accident, health and other policy benefits |  |  |
Reductions to costs and expenses due to reinsurance ceded amounts |  |  |
Ceded losses incurred | $ (7) | $ (29) |

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- References No definition available. + Details
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- Definition Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(13)(a)(2)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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