Accounts Receivable and Notes Receivable and Credit Quality of Receivables - Components of Total Notes Receivable, Net (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total accounts and notes receivable, net	$ 737.2	$ 668.5
Notes Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Notes receivable	217.1	188.1
Notes receivable allowance for doubtful accounts	(20.8)	(15.0)	$ (13.2)
Total accounts and notes receivable, net	196.3	173.1
Domestic | Notes Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Notes receivable	93.5	45.1
Notes receivable allowance for doubtful accounts	(4.0)	(1.0)
International | Notes Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Notes receivable	123.6	143.0
Notes receivable allowance for doubtful accounts	(16.8)	(14.0)
Equal to Greater than 90 Days Past Due | Notes Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Notes receivable, balances over 90 days past due	42.4	39.8
Notes receivable allowance for doubtful accounts, balances over 90 days past due	(20.8)	(14.9)
Notes receivable, net, balances over 90 days past due	21.6	24.9
Equal to Greater than 90 Days Past Due | Domestic | Notes Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Notes receivable, balances over 90 days past due	9.2	1.1
Notes receivable allowance for doubtful accounts, balances over 90 days past due	(4.0)	(0.9)
Equal to Greater than 90 Days Past Due | International | Notes Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Notes receivable, balances over 90 days past due	33.2	38.7
Notes receivable allowance for doubtful accounts, balances over 90 days past due	$ (16.8)	$ (14.0)