Policyholder Account Balances, Future Policy Benefits and Claims and Separate Account Liabilities (Balances by product) (Details) - USD ($) $ in Millions		Sep. 30, 2019	Dec. 31, 2018
Policyholder account balances		$ 19,819	$ 19,941
Future policy benefits		11,173	9,292
Policy claims and other policyholders' funds		154	891
Policyholder account balances, future policy benefits and claims		31,146	30,124
Fixed annuities [Member]
Policyholder account balances	[1]	9,015	9,338
Variable annuity fixed sub-accounts [Member]
Policyholder account balances		5,122	5,129
UL/VUL insurance [Member]
Policyholder account balances		3,093	3,063
IUL [Member]
Policyholder account balances		1,933	1,728
Other life insurance [Member]
Policyholder account balances		656	683
Variable annuity GMWB [Member]
Future policy benefits		2,120	875
Variable annuity GMAB [Member]
Future policy benefits	[2]	(19)	(19)
Other annuity liabilities [Member]
Future policy benefits		141	26
Fixed annuity life contingent liabilities [Member]
Future policy benefits		1,450	1,459
Life and disability income insurance [Member]
Future policy benefits		1,214	1,221
Long term care insurance [Member]
Future policy benefits		5,268	4,981
UL/VUL and other life insurance additional liabilities [Member]
Future policy benefits		$ 999	$ 749

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

[2] Includes the fair value of GMAB embedded derivatives that was a net asset as of both September 30, 2019 and December 31, 2018 reported as a contra liability.