Related Party (Affiliated Asset Administration Fee Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Related Party Transactions [Abstract]
AST Revenue Sharing Income	$ 53cik881453_AstRevenueSharingIncome	$ 55cik881453_AstRevenueSharingIncome

Income associated with the Pruco-AST revenue sharing agreement.

No definition available.

Name:	cik881453_AstRevenueSharingIncome
Namespace Prefix:	cik881453_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration