Investments (excluding Consolidated Investment Entities) - OTTI (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($) security	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($) security
Available-for-sale Securities, Including Securities Pledged [Line Items]
Impairment | $	$ 12	$ 0	$ 21	$ 0
No. of Securities | security	77	2	89	11
Residential mortgage-backed
Available-for-sale Securities, Including Securities Pledged [Line Items]
Impairment | $	$ 11	$ 0	$ 20	$ 0
No. of Securities | security	74	2	85	10
Commercial mortgage-backed securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Impairment | $	$ 1	$ 0	$ 1	$ 0
No. of Securities | security	2	0	3	1
Foreign corporate public securities and foreign governments
Available-for-sale Securities, Including Securities Pledged [Line Items]
Impairment | $	$ 0	$ 0	$ 0	$ 0
No. of Securities | security	1	0	1	0