Commitments and Contingent Liabilities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Commitments And Contingent Liabilities [Line Items]
Net Income (Loss) Attributable to Parent	$ 101	$ 325	$ 275	$ 528
PRP site [Member]
Commitments And Contingent Liabilities [Line Items]
Estimated future remediation costs	6		6
Non- PRP sites [Member]
Commitments And Contingent Liabilities [Line Items]
Estimated future remediation costs	7		7
Site Contingency, Recovery from Third Party of Environmental Remediation Cost	3		3
Environmental Issue [Member]
Commitments And Contingent Liabilities [Line Items]
Net Income (Loss) Attributable to Parent			11
LegalSettlementCashReceived			15
LegalSettlementCashExpected			1
Gain (Loss) Related to Litigation Settlement			16
Indemnification Agreement [Member]
Commitments And Contingent Liabilities [Line Items]
Loss Contingency, Range of Possible Loss, Maximum	8		8
Property Lease Guarantee [Member]
Commitments And Contingent Liabilities [Line Items]
Guarantees related to residual values of leased assets	40		40
Foreign Tax Authority [Member] | Italian Subsidiaries (Member)
Commitments And Contingent Liabilities [Line Items]
Loss Contingency Accrual, Period Increase	14		20
Net Income (Loss) Attributable to Parent	$ 13		$ 14