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Market Risk Benefits - Schedule of Reconciliation of Asset and Liability (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | $ 187 | $ 189
Market risk benefits liability | 635 | 549
Direct |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 101 | 128
Market risk benefits liability | 635 | 549
Reinsured |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 86 | 61
Market risk benefits liability | 0 | 0
Indexed annuities |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 187 | 189
Market risk benefits liability | 634 | 548
Indexed annuities | Direct |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 101 | 128
Market risk benefits liability | 634 | 548
Indexed annuities | Reinsured |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 86 | 61
Market risk benefits liability | 0 | 0
Fixed rate annuities |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 0 | 0
Market risk benefits liability | 1 | 1
Fixed rate annuities | Direct |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 0 | 0
Market risk benefits liability | 1 | 1
Fixed rate annuities | Reinsured |  |
Market Risk Benefit [Line Items] |  |
Market risk benefits asset | 0 | 0
Market risk benefits liability | $ 0 | $ 0

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- Definition Amount of asset position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29G + Details
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- Definition Amount of liability position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29G + Details
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