Investments (excluding Consolidated Investment Entities) - Loans by Loan to Value (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Schedule of Loans by Loan to Value Ratio [Line Items]
Targeted maximum amount of mortgage loans lended, percent of estimated fair value of underlying real estate		75.00%
Benchmark loan to value ratio, greater than indicates unpaid loan amount exceeds underlying collateral		100.00%
Benchmark ratio		100.00%
Commercial mortgage loans		$ 5,408	$ 5,627
0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Loan to value ratio, minimum	0.00%	0.00%
Loan to value ratio, maximum	50.00%	50.00%
Commercial mortgage loans		$ 3,545	3,655
50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Loan to value ratio, minimum	50.00%	50.00%
Loan to value ratio, maximum	60.00%	60.00%
Commercial mortgage loans		$ 1,459	1,595
60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Loan to value ratio, minimum	60.00%	60.00%
Loan to value ratio, maximum	70.00%	70.00%
Commercial mortgage loans		$ 385	377
70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Loan to value ratio, minimum	70.00%	70.00%
Loan to value ratio, maximum	80.00%	80.00%
Commercial mortgage loans		$ 19	0
80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Loan to value ratio, minimum	80.00%	80.00%
Commercial mortgage loans		$ 0	0
Year of Origination 2022
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		485
Year of Origination 2022 | 0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		160
Year of Origination 2022 | 50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		261
Year of Origination 2022 | 60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		64
Year of Origination 2022 | 70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0
Year of Origination 2022 | 80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0
Year of Origination 2021
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		774	785
Year of Origination 2021 | 0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		245	269
Year of Origination 2021 | 50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		281	315
Year of Origination 2021 | 60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		239	201
Year of Origination 2021 | 70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		9	0
Year of Origination 2021 | 80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2020
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		377	457
Year of Origination 2020 | 0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		114	140
Year of Origination 2020 | 50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		228	240
Year of Origination 2020 | 60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		25	77
Year of Origination 2020 | 70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		10	0
Year of Origination 2020 | 80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2019
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		368	462
Year of Origination 2019 | 0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		197	201
Year of Origination 2019 | 50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		142	192
Year of Origination 2019 | 60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		29	69
Year of Origination 2019 | 70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2019 | 80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2018
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		208	221
Year of Origination 2018 | 0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		163	169
Year of Origination 2018 | 50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		43	50
Year of Origination 2018 | 60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		2	2
Year of Origination 2018 | 70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2018 | 80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2017
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		832	874
Year of Origination 2017 | 0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		626	656
Year of Origination 2017 | 50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		202	214
Year of Origination 2017 | 60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		4	4
Year of Origination 2017 | 70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2017 | 80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2016
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		2,364	2,828
Year of Origination 2016 | 0% - 50%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		2,040	2,220
Year of Origination 2016 | 50% - 60%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		302	584
Year of Origination 2016 | 60% - 70%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		22	24
Year of Origination 2016 | 70% - 80%
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		0	0
Year of Origination 2016 | 80% and above
Schedule of Loans by Loan to Value Ratio [Line Items]
Commercial mortgage loans		$ 0	$ 0