Commitments and Contingent Liabilities (Details)					3 Months Ended		12 Months Ended						1 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2012 Property Lease Guarantee [Member] USD ($)	Dec. 31, 2012 PRP site [Member] USD ($)	Dec. 31, 2012 Non- PRP sites [Member] USD ($)	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) USD ($)	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) EUR (€)	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) USD ($)	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) EUR (€)	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) Potential Penalties [Member] USD ($)	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) Potential Penalties [Member] EUR (€)	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) Favorable Court Ruling [Member] Court_ruling	Dec. 31, 2012 Foreign Tax Authority [Member] Italian Subsidiaries (Member) Unfavorable Outcomes [Member] Court_ruling	Feb. 28, 2013 Subsequent Event [Member] Foreign Tax Authority [Member] Italian Subsidiaries (Member) USD ($)	Feb. 28, 2013 Subsequent Event [Member] Foreign Tax Authority [Member] Italian Subsidiaries (Member) EUR (€)
Commitments And Contingent Liabilities [Line Items]
Estimated future remediation costs			$ 6,000,000	$ 7,000,000
Loss Contingency, Damages Sought, Value							33,000,000	25,000,000	66,000,000	50,000,000
Court Rulings, Outcomes											1	2
Litigation Settlement, Gross					3,000,000	2,000,000							3,000,000	2,000,000
Loss Contingency Accrual, at Carrying Value					14,000,000		14,000,000
Maximum potential costs related to indemnification agreements for properties sold and businesses divested	10,000,000
Guarantees related to residual values of leased assets		$ 40,000,000