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Related Party (Reinsurance With Affiliates Pruco Re) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Ceded Rider Fees [Line Items]      
Total Fees Ceded to Pruco Reinsurance $ 274cik881453_TotalPrucoRe $ 275cik881453_TotalPrucoRe $ 269cik881453_TotalPrucoRe
Total Fees Ceded to Prudential Insurance $ 1cik881453_TotalFeesCededToPrudentialInsurance $ 1cik881453_TotalFeesCededToPrudentialInsurance $ 1cik881453_TotalFeesCededToPrudentialInsurance