Policyholder Account Balances, Future Policy Benefits and Claims and Separate Account Liabilities (Separate Account Liabilities) (Details 3) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Separate Account Liabilities
Variable annuity	$ 69,606	$ 69,333
VUL insurance	6,659	6,637
Other insurance	33	34
Threadneedle investment liabilities	3,912	4,345
Total	$ 80,210	$ 80,349