Contingencies Other Litigation (Details) (Other Litigation [Member], Tax [Member], BRAZIL [Member])	Aug. 01, 2012 Litigation_Cases
Loss Contingencies [Line Items]
Cases brought against PM	113
Cases Under Administrative Review [Member]
Loss Contingencies [Line Items]
Cases brought against PM	58
Cases Under Judicial Review [Member]
Loss Contingencies [Line Items]
Cases brought against PM	55