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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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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

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Amount of allowance for credit loss on reinsurance recoverable.

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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.

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