Commitments, Contingent Liabilities And Litigation And Regulatory Matters (Litigation Narrative) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Minimum [Member]
Litigation [Line Items]
Estimate of possible losses in excess of accruals	$ 0
Maximum [Member]
Litigation [Line Items]
Estimate of possible losses in excess of accruals	$ 3

Estimate of loss in excess of accruals for where a loss may be reasonably possible, but not probable

No definition available.

Name:	cik881453_Losscontingencyestimateofreasonablypossiblelosses
Namespace Prefix:	cik881453_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant