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Future Policy Benefits (Details) (Narrative) - Other Segments - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2022
Life Insurance Product Line [Member] |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |
Changes In Cash Flow Assumptions | $ 85 | $ 269 | $ 269
Future Policy Benefits Remeasurement Gain Loss After Reinsurance | (75) | (329) | (306)
Life Insurance Product Line [Member] | Americas [Member] |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |
Changes In Cash Flow Assumptions | 17 | 130 | 130
Liability for Future Policy Benefit, after Reinsurance | 8,599 | 8,777 | 8,777
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance | (658) | (413) | (413)
Insurance, Other |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |
Changes In Cash Flow Assumptions | 78 | 3 | 3
Insurance, Other | Americas [Member] |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |
Changes In Cash Flow Assumptions | (22) | (3) | (3)
Liability for Future Policy Benefit, after Reinsurance | 4,456 | 3,827 | 3,827
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance | $ 0 | $ 0 | $ 0

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- Definition Amount, after effect of reinsurance, of liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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