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Reserves for Future Policy Benefits (Details) - Annuaitization Benefit - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross [Roll Forward]
Beginning liability balance	$ 638	$ 635
Incurred	45	74
Paid	74	67
Change in unrealized investment gains and losses	(7)	8
Ending liability balance	602	650
Movement in Liabilities for Guarantees on Long-Duration Contracts, Reinsurance Recoverable [Roll Forward]
Ending reinsurance recoverable asset	$ 22	$ 29

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- Definition

Movement in Liabilities for Guarantees on Long-Duration Contracts, Reinsurance Recoverable [Roll Forward]

+ References

No definition available.

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- Definition

Amount of expected guaranteed benefits in excess of the projected account balances for minimum guaranteed benefit contracts, as of the balance sheet date.

+ References

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- Definition

Amount of guaranteed minimum benefit expense incurred for expected guaranteed minimum benefits in excess of projected account values.

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Net amount of other increases or decreases to the liability for guaranteed minimum benefits on long-duration contracts occurring during the period.

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- Definition

Amount of cash outflow to policyholders and contract holders for guaranteed minimum benefit payments.

+ References

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-Publisher FASB
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Amount of guaranteed minimum benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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