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Investments - Loan Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2022	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		$ 237		$ 253
Financing Receivable, Credit Loss, Expense (Reversal)		(21)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		6
Financing Receivable, Allowance for Credit Loss, Writeoff		(1)
Debt Securities, Available-for-sale, Allowance for Credit Loss	$ 459	123	$ 311	104
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	270	26
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	7	25
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	(60)	(31)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(63)	(1)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	(6)	0
Consolidated Entity, excluding Affiliated Entity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		154
Debt Securities, Available-for-sale, Allowance for Credit Loss	458
Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	458	123	311	103
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	249	21
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	7	25
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	(60)	(30)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(43)	4
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	(6)	0
Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		5
Debt Securities, Available-for-sale, Allowance for Credit Loss	1	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	21
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(20)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	0
Corporate \| Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	61	0	0	6
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	70	3
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	0	(7)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(3)	(2)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	(6)	0
Corporate \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
CLO \| Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	7	0	0	1
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	29	7
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	0	(1)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(22)	(7)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	0	0
CLO \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	1	0	0	1
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	3	5
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	0	(1)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(2)	(5)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	0	0
ABS \| Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	29	17	5	6
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	28	5
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	(3)	(2)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(1)	8
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	0	0
ABS \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	18
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(18)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	0
CMBS \| Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	5	3	0	10
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	15	4
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	0	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(10)	(11)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	0	0
RMBS \| Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	329	103	306	80
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	41	2
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	7	25
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	(29)	(20)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	4	16
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	0	0
Foreign governments \| Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	27	0	$ 0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded	66
Debt Securities, Available-for-sale, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	0
Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold	(28)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)	(11)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Sell before Recovery	$ 0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		167		167
Financing Receivable, Credit Loss, Expense (Reversal)		0
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0
Financing Receivable, Allowance for Credit Loss, Writeoff		0
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		70		79
Financing Receivable, Credit Loss, Expense (Reversal)		(14)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		6
Financing Receivable, Allowance for Credit Loss, Writeoff		(1)
Other investments
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		0		$ 7
Financing Receivable, Credit Loss, Expense (Reversal)		(7)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0
Financing Receivable, Allowance for Credit Loss, Writeoff		$ 0