Policyholder Account Balances, Future Policy Benefits and Claims and Separate Account Liabilities (Separate Account Liabilities) (Details 2) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Separate Account Liabilities
Variable annuity	$ 69,333	$ 72,125
VUL insurance	6,637	7,016
Other insurance	34	37
Threadneedle investment liabilities	4,345	4,078
Total	$ 80,349	$ 83,256