Related Party (Affiliated Asset Transfers) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Related Party Transactions [Line Items]
Commercial mortgage loans asset transfer amortized cost	$ 90
Commercial mortgage loans asset transfer fair value	103
Realized gain on commerical mortgage loan asset transfer	$ 8

Amortized cost of commerical mortgage loans sold to affiliates.

No definition available.

Name:	cik881453_CommercialMortgageLoansAssetTransferAmortizedCost
Namespace Prefix:	cik881453_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant