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Investments - Mortgage Loans- ACL (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss					$ 0
Retained Earnings (Accumulated Deficit)	$ 17,048	$ 15,764			12,685
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss				$ 19
Retained Earnings (Accumulated Deficit)				12,667
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	36	29	$ 38		$ 0
Financing Receivable, Credit Loss, Expense (Reversal)	$ 7	$ (9)	$ 19
Commercial Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Retained Earnings (Accumulated Deficit)				19
Commercial Loan [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss				$ 19

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- Definition

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