Accounts Receivable Sales Agreements (Details) (USD $)	3 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net cash received from receivables sold	$ 1,100,000,000	$ 1,200,000,000
Outstanding accounts receivable associated with retail finance joint ventures in Brazil and Australia	26,700,000	43,300,000
Other Expenses, Net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loss on sales of receivables	$ 5,000,000		$ 7,500,000
Corporate Joint Venture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Joint venture ownership percentage	49.00%	49.00%