Commitments And Contingencies (Details) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 USD ($)	Mar. 31, 2012 BRL	Dec. 31, 2011 USD ($)	Mar. 31, 2012 Corporate Joint Venture [Member] Retail Finance Joint Venture [Member]
Guarantees [Abstract]
Term of Unrecorded Unconditional Purchase Obligation	6.0	6.0
Guaranteed indebtedness owed to third parties	$ 143.9
Equity Method Investment, Ownership Percentage				49.00%
Loss Contingency [Abstract]
Reserve Against Value Added Tax Receivable	38.6		37.4
Tax disallowance not including interest and penalties	$ 49.6	90.6