Derivative Financial Instruments - FGL's Exposure to Credit Loss on Call Options Held (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Fair Value	$ 360	$ 849
Not Designated as Hedging Instrument \| Call options
Derivatives, Fair Value [Line Items]
Notional Amount	20,807	19,404
Fair Value	145	816
Collateral	124	790
Maximum amount of loss due to credit risk	30	42
Not Designated as Hedging Instrument \| Call options \| Merrill Lynch
Derivatives, Fair Value [Line Items]
Notional Amount	3,735	3,307
Fair Value	30	128
Collateral	0	86
Maximum amount of loss due to credit risk	30	42
Not Designated as Hedging Instrument \| Call options \| Morgan Stanley
Derivatives, Fair Value [Line Items]
Notional Amount	1,581	2,184
Fair Value	6	86
Collateral	7	92
Maximum amount of loss due to credit risk	0	0
Not Designated as Hedging Instrument \| Call options \| Barclay's Bank
Derivatives, Fair Value [Line Items]
Notional Amount	5,421	5,197
Fair Value	46	231
Collateral	48	233
Maximum amount of loss due to credit risk	0	0
Not Designated as Hedging Instrument \| Call options \| Canadian Imperial Bank of Commerce
Derivatives, Fair Value [Line Items]
Notional Amount	3,832	2,936
Fair Value	22	147
Collateral	26	151
Maximum amount of loss due to credit risk	0	0
Not Designated as Hedging Instrument \| Call options \| Wells Fargo
Derivatives, Fair Value [Line Items]
Notional Amount	1,945	2,445
Fair Value	12	89
Collateral	13	90
Maximum amount of loss due to credit risk	0	0
Not Designated as Hedging Instrument \| Call options \| Goldman Sachs
Derivatives, Fair Value [Line Items]
Notional Amount	660	307
Fair Value	4	10
Collateral	4	10
Maximum amount of loss due to credit risk	0	0
Not Designated as Hedging Instrument \| Call options \| Credit Suisse
Derivatives, Fair Value [Line Items]
Notional Amount	1,157	1,485
Fair Value	4	74
Collateral	4	75
Maximum amount of loss due to credit risk	0	0
Not Designated as Hedging Instrument \| Call options \| Truist
Derivatives, Fair Value [Line Items]
Notional Amount	2,476	1,543
Fair Value	21	51
Collateral	22	53
Maximum amount of loss due to credit risk	$ 0	$ 0

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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