Related Party Transactions (Reinsurance With Affiliates) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Reinsurance recoverables	$ 726,914	$ 3,088,328
Deferred policy acquisition costs	3,679,638	749,302
Policyholders’ account balances	4,774,242	2,416,125
Future policy benefits and other policyholder liabilities	13,310,707	3,578,662
Other liabilities (reinsurance payables)	715,600	100,618
Value of business acquired (VOBA)	28,900	33,640
Affiliated Entity
Related Party Transaction [Line Items]
Reinsurance recoverables	726,914	3,088,328
Deferred policy acquisition costs	3,108,741	(73,864)
Policyholders’ account balances	2,441,768	0
Future policy benefits and other policyholder liabilities	8,369,073	0
Other liabilities (reinsurance payables)	329,520	250,277
Value of business acquired (VOBA)	(2,335)	(2,632)
Deferred charges and prepaid assets	$ 455,574	$ (39,253)