Commitments, Contingent Liabilities And Litigation And Regulatory Matters (Narrative Excluding Litigation) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Commitments And Guarantees And Contingent Liabilities [Abstract]
Total outstanding mortgage loan commitments	$ 28	$ 5
Obligation to purchase or fund investments	$ 31	$ 36

Commitments And Guarantees Contingent Liabilities And Litigation And Regulatory Matters [Abstract]

No definition available.

Name:	cik881453_CommitmentsAndGuaranteesAndContingentLiabilitiesAbstract
Namespace Prefix:	cik881453_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration