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Future Policy Benefits - Gross Premium Income and Interest Expense (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Liability for Future Policy Benefit, Activity [Line Items]
Gross premium income	$ 811	$ 606
Interest expense	102	69
Traditional Life
Liability for Future Policy Benefit, Activity [Line Items]
Gross premium income	63	70
Interest expense	19	20
Immediate Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Gross premium income	11	16
Interest expense	33	30
PRT
Liability for Future Policy Benefit, Activity [Line Items]
Gross premium income	737	520
Interest expense	$ 50	$ 19

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- Definition

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-Topic 944
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-Section 55
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Amount of gross premium income recognized for liability for future policy benefit.

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