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Future Policy Benefits (Details) (Narrative) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Future Policy Benefits Remeasurement Gain Loss After Reinsurance | $ 136 |
Life Insurance Product Line [Member] | Other Segments |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Future Policy Benefits Remeasurement Gain Loss After Reinsurance | 39 | $ 85
Life Insurance Product Line [Member] | Americas [Member] | Other Segments |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Changes In Cash Flow Assumptions | 31 | 17
Liability for Future Policy Benefit, after Reinsurance | 10,607 | 8,599
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance | (726) | (658)
Insurance, Other | Other Segments |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Future Policy Benefits Remeasurement Gain Loss After Reinsurance | 20 | 78
Insurance, Other | Americas [Member] | Other Segments |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Changes In Cash Flow Assumptions | 8 | 22
Liability for Future Policy Benefit, after Reinsurance | 6,853 | 4,456
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance | $ (1,241) | $ 0

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- Definition Amount, after effect of reinsurance, of liability for future policy benefit. + References Reference 1: 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 Reference 2: 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 3: 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 + Details
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- Definition Amount, after allowance for credit loss, recoverable under reinsurance of liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-6 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -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 4: 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 + Details
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