| Standard label: | Liabilities for Guarantees on Long-Duration Contracts, Payment for Benefits |
| Name: | us-gaap:LiabilitiesForGuaranteesOnLongDurationContractsPaymentForBenefits |
| Documentation: | Amount of cash outflow to policyholders and contract holders for guaranteed minimum benefit payments. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LiabilitiesForGuaranteesOnLongDurationContractsPaymentForBenefits |
| Label | Role | Language |
| Liabilities for Guarantees on Long-Duration Contracts, Payment for Benefits | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 17 (f) | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |
| FASB Accounting Standards Codification 944 20 55 15 | http://www.xbrl.org/2003/role/exampleRef | 944 |
| FASB Accounting Standards Codification 944 80 50 1 (d)(4) | http://www.xbrl.org/2003/role/disclosureRef | 944 |