Investments (excluding Consolidated Investment Entities) - Fixed Maturities (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	$ 31,380	$ 30,656
Securities pledged, amortized costs	1,297	1,091
U.S. Treasuries
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	724	764
Gross Unrealized Capital Gains	25	239
Gross Unrealized Capital Losses	17	0
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	732	1,003
OTTI	0	0
U.S. Government agencies and authorities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	47	69
Gross Unrealized Capital Gains	3	12
Gross Unrealized Capital Losses	1	0
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	49	81
OTTI	0	0
State, municipalities and political subdivisions
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	993	1,000
Gross Unrealized Capital Gains	1	112
Gross Unrealized Capital Losses	130	1
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	864	1,111
OTTI	0	0
U.S. corporate public securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	10,180	10,402
Gross Unrealized Capital Gains	89	1,580
Gross Unrealized Capital Losses	1,451	41
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	8,815	11,941
OTTI	3	0
U.S. corporate private securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	5,052	4,889
Gross Unrealized Capital Gains	7	459
Gross Unrealized Capital Losses	477	23
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	4,582	5,325
OTTI	0	0
Foreign corporate public securities and foreign governments
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	3,347	3,373
Gross Unrealized Capital Gains	9	368
Gross Unrealized Capital Losses	489	18
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	2,854	3,723
OTTI	13	0
Foreign corporate private securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	3,379	3,320
Gross Unrealized Capital Gains	3	238
Gross Unrealized Capital Losses	307	1
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	3,058	3,501
OTTI	17	56
Residential mortgage-backed
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	4,233	4,183
Gross Unrealized Capital Gains	36	139
Gross Unrealized Capital Losses	287	31
Embedded Derivatives	3	12
Fixed maturities, available-for-sale, at fair value	3,982	4,302
OTTI	3	1
Commercial mortgage-backed securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	4,490	4,032
Gross Unrealized Capital Gains	4	173
Gross Unrealized Capital Losses	484	22
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	4,009	4,183
OTTI	1	0
Other asset-backed securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	2,298	2,069
Gross Unrealized Capital Gains	3	25
Gross Unrealized Capital Losses	205	12
Embedded Derivatives	0	0
Fixed maturities, available-for-sale, at fair value	2,094	2,081
OTTI	2	1
Fixed maturities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Fixed maturities, amortized cost	34,743	34,101
Gross Unrealized Capital Gains	180	3,345
Gross Unrealized Capital Losses	3,848	149
Embedded Derivatives	3	12
Fixed maturities, available-for-sale, at fair value	31,039	37,251
OTTI	39	58
Total fixed maturities, less securities pledged, Amortized Cost	33,446	33,010
Total fixed maturities, less securities pledged, Gross Unrealized Capital Gains	173	3,238
Total fixed maturities, less securities pledged, Gross Unrealized Capital Losses	3,667	149
Total fixed maturities, less securities pledged, Fair Value	29,916	36,053
Collateral Pledged
Available-for-sale Securities, Including Securities Pledged [Line Items]
Securities pledged	1,123	1,198
Collateral Pledged | Fixed maturities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Embedded Derivatives	0	0
OTTI	0	0
Securities pledged, amortized costs	1,297	1,091
Securities pledged, Gross Unrealized Capital Gains	7	107
Securities pledged, Gross Unrealized Capital Losses	181	0
Securities pledged	$ 1,123	$ 1,198