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Reinsurance - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Oct. 01, 2023 agreement
Ceded Credit Risk [Line Items] |  |  |  |
Number of reinsurance recoverable agreements | agreement |  |  |  | 2
Deposit assets, net of allowance for credit losses | $ 29,888 | $ 29,888 | $ 28,789 |
Investments | 126,595 | 126,595 | 124,331 |
Fortitude Re |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Deposits assets | 7,900 | 7,900 | 7,800 |
Investments | 9,300 | 9,300 | 9,900 |
Fixed Annuities | Fortitude Re |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |
Reinsurance recoverables | 10,500 | 10,500 | 10,500 |
Reinsurance recoverables on unpaid losses | 2,600 | 2,600 | 2,700 |
Reinsurance recoverable amortization | 22 | 44 |  |
Deposit assets, net of allowance for credit losses | $ 3,700 | $ 3,700 | $ 4,200 |

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- Definition Amount before valuation allowance recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479838/944-20-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479616/944-310-45-5 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-14 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7A -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-7A + Details
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