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F&G Reinsurance - Narrative (Details) $ in Millions			3 Months Ended	6 Months Ended
	May 31, 2021 agreements	Jan. 15, 2021	Jun. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 01, 2020 USD ($)
Ceded Credit Risk [Line Items]
Credit loss, reserve decrease			$ 21	$ 21
Expected credit losses on reinsurance recoverable			$ 20	$ 20	$ 21	$ 21	$ 0
Number of policies reinsured by foreign company not engaged in insurance				0
Funds withheld co-insurance basis, percentage		50.00%
Number of agreements | agreements	2
Wilton Reassurance Company
Ceded Credit Risk [Line Items]
Net amount recoverable				$ 1,378
Kubera Reassurance Company
Ceded Credit Risk [Line Items]
Net amount recoverable				794
Aspida Re
Ceded Credit Risk [Line Items]
Net amount recoverable				488
Scottish Re
Ceded Credit Risk [Line Items]
Net amount recoverable				28
Pavonia Life Insurance Company
Ceded Credit Risk [Line Items]
Net amount recoverable				$ 76

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Funds Withheld Co-Insurance Basis, Percentage

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Number of Agreements

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Number of Policies Reinsured by Foreign Company Not Engaged in Insurance

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The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 30
-Section 50
-Paragraph 1
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Amount of increase (decrease) in allowance for credit loss on reinsurance recoverable.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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Amount of allowance for credit loss on reinsurance recoverable.

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