Accounts Receivable and Notes Receivable and Credit Quality of Receivables - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled accounts receivable	$ 61.2	$ 59.7
Accounts and notes receivable, net	737.2	668.5
Notes Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and notes receivable, net	$ 196.3	$ 173.1
Financing receivable, percentage greater than 90 days past due	11.00%	14.40%
Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and notes receivable, net	$ 25.9
Proceeds from collection of accounts and notes receivable, net	40.9
PERU
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and notes receivable, net	22.2
Proceeds from collection of accounts and notes receivable, net	15.0
Argentina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and notes receivable, net	26.5
Proceeds from collection of accounts and notes receivable, net	$ 26.4
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, imputed interest rate	3.00%	3.25%
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, imputed interest rate	10.40%	10.40%