Related Party Transactions (Reinsurance With Affiliates) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Reinsurance recoverables	$ 30,853,161	$ 22,546,361
Policy loans	1,153,528	1,143,303
Deferred policy acquisition costs	1,154,977	5,111,373
Other assets	292,016	59,578
Policyholders’ account balances	17,707,166	17,164,705
Future policy benefits and other policyholder liabilities	19,410,550	15,031,390
Other liabilities	766,609	935,662
Affiliated Entity
Related Party Transaction [Line Items]
Reinsurance recoverables	30,853,161	22,546,361
Policy loans	(80,616)	(75,697)
Deferred policy acquisition costs	(5,680,833)	(2,122,349)
Other assets	(288,337)	35,616
Policyholders’ account balances	4,929,689	5,020,230
Future policy benefits and other policyholder liabilities	2,947,810	2,380,215
Other liabilities	$ 330,835	$ 494,660