Variable Interest Entities - Investment Entities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
VIEs, not primary beneficiary
Variable interest entities
Obligation to provide financial or other support to VIEs	$ 0
VIEs, not primary beneficiary | CLOs
Variable interest entities
Maximum loss exposure	1	$ 3
Available-for-Sale securities, amortized cost	1	3
VIEs, not primary beneficiary | Property Funds
Variable interest entities
Maximum loss exposure	44	23
Other investments	44	23
VIEs, not primary beneficiary | Hedge Funds and other Private Funds
Variable interest entities
Maximum loss exposure	0	0
Other investments	0	0
VIEs, not primary beneficiary | Non-U.S. Series Funds
Variable interest entities
Maximum loss exposure	43	20
Other investments	43	20
VIEs, not primary beneficiary | Affordable Housing Partnerships and Other Real Estate Partnerships
Variable interest entities
Maximum loss exposure	138	200
Other investments	138	200
Liability related to original purchase commitments not yet remitted	8	9
Consolidated investment entities | Unfunded commitments
Variable interest entities
Loans	$ 27	$ 13