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F&G Reinsurance - Summary of Reinsurance Recoverable (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
Effects of Reinsurance [Line Items] |  |  |  |
Allowance for expected credit loss | $ (21) | $ (21) | $ (9) | $ (10)
Reinsurance Recoverables, Including Reinsurance Premium Paid | $ 10,129 | $ 8,977 |  |
Reinsurance, retrocession, quota share basis, percentage | 90.00% | 90.00% |  |
F&G |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Reinsurance recoverable, gross of allowance for credit losses | $ 10,133 | $ 8,981 |  |
Allowance for expected credit loss | (21) | (21) |  |
Reinsurance Recoverables, Including Reinsurance Premium Paid | 10,112 | 8,960 |  |
Aspida Re | Certain MYGA | F&G |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Reinsurance recoverable, gross of allowance for credit losses | 6,489 | 6,128 |  |
Somerset | Certain MYGA and DA | F&G |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Reinsurance recoverable, gross of allowance for credit losses | 1,250 | 716 |  |
Wilton Reassurance Company | Block of traditional, IUL and UL | F&G |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Reinsurance recoverable, gross of allowance for credit losses | 1,085 | 1,092 |  |
Everlake Life Insurance Company | Certain MYGA | F&G |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Reinsurance recoverable, gross of allowance for credit losses | 791 | 509 |  |
Other | F&G |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Reinsurance recoverable, gross of allowance for credit losses | $ 518 | $ 536 |  |

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- Definition Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid 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/2009/role/commonPracticeRef -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/2009/role/commonPracticeRef -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 3: http://www.xbrl.org/2009/role/commonPracticeRef -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 + Details
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