Litigation - Schedule of Loss Contingencies by Contingency (Parenthetical) (Detail)	Jun. 30, 2013 Claim	Jun. 30, 2012 Claim
Commitments And Contingencies Disclosure [Abstract]
Number of claims inactive or transferred to MDL panel	1,633	1,657

Claims classified in various jurisdictions as inactive or transferred to state or federal judicial panel on multi district litigation.

No definition available.

Name:	ap_ClaimsClassifiedInVariousJurisdictionsAsInactiveOrTransferredToStateOrFederalJudicialPanelOnMultiDistrictLitigation
Namespace Prefix:	ap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant