Acquisitions and Dispositions - Major classes of assets and liabilities to be transferred to buyer (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Total assets	$ 0	$ 42,131
Liabilities
Total liabilities	0	33,325
Discontinued Operations, Held-for-sale
Assets
Fixed income securities, at fair value	26,425	23,789
Equity securities, at fair value	11	1,542
Mortgage loans, net	2,662	3,329
Limited partnership interests	1,624	3,046
Short-term, at fair value	643	993
Other investments, net	690	1,998
Total investments	32,055	34,697
Cash	1,081	66
Deferred policy acquisitions costs	996	925
Reinsurance recoverables, net	1,979	2,005
Accrued investment income	240	229
Other assets	536	865
Separate accounts	3,465	3,344
Total assets	40,352	42,131
Liabilities
Reserve for future policy benefits	11,573	11,740
Contractholder funds	15,880	16,356
Deferred income taxes	834	973
Other liabilities and accrued expenses	452	912
Separate accounts	3,465	3,344
Total liabilities	$ 32,204	$ 33,325