Percent, after disposal, of ownership interest of a discontinued operation in which an equity method investment is retained.

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The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.

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The difference between the carrying value and the sale price of an investment. A loss would be recognized when the sale price of the investment is less than the carrying value of the investment. This element refers to the Loss included in earnings and not to the cash proceeds of the sale.

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain (loss) on investment.

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Available-for-sale Securities, Gross Realized Gains Losses Sale Proceeds [Abstract]

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Available-for-sale Securities, Including Securities Pledged [Line Items]

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Investments - Net Realized Capital Gains (Losses) (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Available-for-sale Securities Including Securities Pledged [Line Items]
Discontinued Operation, Equity Method Investment Retained after Disposal, Ownership Interest after Disposal			9.99%
Realized capital gains (losses)	$ (310,000,000)	$ (144,000,000)	$ 166,000,000	$ (310,000,000)	$ (144,000,000)
Proceeds from sale of investments
Proceeds on sales			5,275,000,000	1,512,000,000	2,418,000,000
Gain on Sale of Investments			538,000,000	85,000,000	30,000,000
Gross losses			8,000,000	59,000,000	25,000,000
Discontinued Operations
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)			95,000,000
Embedded derivatives - fixed maturities
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	0	2,000,000	(4,000,000)
Guaranteed benefit derivatives
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(27,000,000)	(11,000,000)	35,000,000
Mortgage loans on real estate
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)			99,000,000	$ (56,000,000)	$ 0
Derivatives
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	49,000,000	(82,000,000)	(18,000,000)
Other investments
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	1,000,000	(1,000,000)	95,000,000
Fixed maturities, available-for-sale, including securities pledged
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(23,000,000)	11,000,000	515,000,000
Fixed maturities, at fair value using the fair value option
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(257,000,000)	(47,000,000)	(562,000,000)
Equity Securities [Member]
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	$ 3,000,000	$ (16,000,000)	$ 6,000,000