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Market Risk Benefits (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Market Risk Benefit [Line Items] |  |  |  |
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk | $ 202 | $ 229 |  |
Market Risk Benefit, Net Amount at Risk | 217 |  | $ 258 |
Insurance, Other | Americas [Member] | Other Segments |  |  |  |
Market Risk Benefit [Line Items] |  |  |  |
Market Risk Benefit, after Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change | 202 | 229 | 249 | $ 247
Market Risk Benefit, before Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change | 210 | 245 | $ 253 | $ 263
Market Risk Benefit, Interest Expense | 6 | 6 |  |
Market Risk Benefit, Attributed Fee Collected | 13 | 13 |  |
Market Risk Benefit, Benefit Payment | 0 | (1) |  |
Market Risk Benefit, Increase (Decrease) from Interest Rate Change | (34) | (2) |  |
Market Risk Benefit, Increase (Decrease) from Equity Market Change | (26) | (34) |  |
Market Risk Benefit, Increase (Decrease) from Volatility | 0 | (7) |  |
Market Risk Benefit, Increase (Decrease) from Other Assumption | (9) | (2) |  |
Market Risk Benefit, Increase (Decrease) from Actual Policyholder Behavior Different from Expected | 7 | 9 |  |
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, before Tax | (8) | (16) |  |
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk | 202 | 229 |  |
Market Risk Benefit, Reinsurance Recoverable, after Allowance | 0 | 0 |  |
Market Risk Benefit, Net Amount at Risk | $ 1,302 | $ 1,411 |  |
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age | 71 years | 71 years |  |

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) (AOCI) from (increase) decrease in instrument-specific credit risk on contract or contract feature in long-duration contract issued by insurance entity protecting contract holder from other-than-nominal capital market risk and exposing insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B Reference 2: 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 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (h)(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 13K -Subparagraph (k) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-13K + Details
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