Restructuring and Other Special Charges - Additional Information (Detail) (Restructuring Fiscal 2012 Plan, Restructuring Actions)	9 Months Ended
Sep. 30, 2012 Person
Restructuring Fiscal 2012 Plan \| Restructuring Actions
Restructuring Cost and Reserve [Line Items]
Number of Associates notified	325
Voluntary Retirement	60
Number of Associates to be reduced from current work force	385

The expected number of positions to be eliminated as a result of restructuring activities.

No definition available.

Name:	us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration