Related Party (Affiliated Asset Administration Fee Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Related Party Transactions [Abstract]
AST Revenue Sharing Income	$ 56	$ 59	$ 169	$ 189

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