Policyholder Account Balances, Future Policy Benefits and Claims and Separate Account Liabilities (Balances by product) (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Policyholder account balances		$ 21,546	$ 21,002
Future policy benefits		10,957	12,799
Policy claims and other policyholders' funds		199	191
Policyholder account balances, future policy benefits and claims		32,702	33,992
Fixed annuities [Member]
Policyholder account balances	[1]	8,401	8,531
Variable annuity fixed sub-accounts [Member]
Policyholder account balances		5,075	5,104
UL/VUL insurance [Member]
Policyholder account balances		3,110	3,122
IUL [Member]
Policyholder account balances		2,336	2,269
Structured Variable Annuities [Member]
Policyholder account balances		2,027	1,371
Other life insurance [Member]
Policyholder account balances		597	605
Variable annuity GMWB [Member]
Future policy benefits		1,479	3,049
Variable annuity GMAB [Member]
Future policy benefits	[2]	(22)	1
Other annuity liabilities [Member]
Future policy benefits		173	211
Fixed annuity life contingent liabilities [Member]
Future policy benefits		1,346	1,370
Life and disability income insurance [Member]
Future policy benefits		1,179	1,187
Long term care insurance [Member]
Future policy benefits		5,558	5,722
UL/VUL and other life insurance additional liabilities [Member]
Future policy benefits		$ 1,244	$ 1,259

[1] Includes fixed deferred annuities, non-life contingent fixed payout annuities and fixed deferred indexed annuity host contracts.

[2] Includes the fair value of GMAB embedded derivatives that was a net asset as of March 31, 2021 reported as a contra liability.