Investments (Trading Account Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Amortized Cost	$ 7,024	$ 37,464
Fair Value	7,621	38,578
Fixed Maturities [Member]
Fair Value	5,585	7,007
Fixed Maturities [Member] \| Asset-backed Securities [Member]
Amortized Cost	1,954	30,800
Fair Value	2,036	31,571
Equity Securities [Member]
Amortized Cost	$ 5,070	$ 6,664

This item represents marketable and other securities categorized as trading securities as of the balance sheet date that support certain products which are experience rated, meaning that it is expected the investment results associated with these products will ultimately accrue to contractholders.

No definition available.

Name:	cik881453_TradingAccountAssetsSupportingInsuranceLiabilitiesFairValue
Namespace Prefix:	cik881453_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant