Related Party Transactions (Reinsurance by Counterparty) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Total reinsurance recoverables	$ 726,914	$ 3,088,328
Prudential Insurance
Related Party Transaction [Line Items]
Total reinsurance recoverables	426,599	323,363
Pruco Life
Related Party Transaction [Line Items]
Total reinsurance recoverables	299,906	0
Pruco Re
Related Party Transaction [Line Items]
Total reinsurance recoverables	0	2,764,927
Unaffiliated
Related Party Transaction [Line Items]
Total reinsurance recoverables	$ 409	$ 38

Amount after valuation allowance recoverable including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6480758&loc=d3e6824-158387

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.(a),6)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Name:	us-gaap_ReinsuranceRecoverables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant