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Related Party (Reinsurance With Affiliates Pruco Re) (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Ceded Rider Fees [Line Items]    
Total Fees Ceded to Pruco Reinsurance $ 68,000,000cik881453_TotalPrucoRe $ 69,000,000cik881453_TotalPrucoRe
Total Fees Ceded to Prudential Insurance $ 228,000cik881453_TotalFeesCededToPrudentialInsurance $ 285,000cik881453_TotalFeesCededToPrudentialInsurance