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Accounts and Notes Receivable and Credit Quality of Notes Receivable - Narrative (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2014
Argentina
Jun. 30, 2014
Minimum
Jun. 30, 2014
Maximum
Jun. 30, 2014
Notes receivable
Dec. 31, 2013
Notes receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Accounts and notes receivable, net $ 517.9 $ 577.3 $ 31.8     $ 191.4 $ 231.3
Proceeds from collection of accounts and notes receivable, net     $ 21.3        
Receivable with Imputed Interest, Effective Yield (Interest Rate)       4.00% 8.00%    
Financing receivable, percentage greater than 90 days past due           1.80% 2.50%