Accounts Receivable and Notes Receivable and Credit Quality of Notes Receivable - Evaluation of Notes Receivable For Impairment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Allowance for notes receivable
Total accounts and notes receivable, net	$ 668.5	$ 706.1
Notes Receivable
Notes receivable:
Notes Receivable, Ending Balance Individually Evaluated for Impairment	122.6	122.5
Notes Receivable, Ending Balance Collectively Evaluated for Impairment	65.5	109.7
Notes receivable	188.1	232.2
Allowance for notes receivable
Allowance for Notes Receivable, Ending Balance Individually Evaluated for Impairment	(14.6)	(12.9)
Allowance for Notes Receivable, Ending Balance Collectively Evaluated for Impairment	(0.4)	(0.3)
Allowance for notes receivable	(15.0)	(13.2)
Total Notes Receivable, Individually Evaluated for Impairment, Net	108.0	109.6
Total Notes Receivable, Collectively Evaluated for Impairment, Net	65.1	109.4
Total accounts and notes receivable, net	173.1	219.0
Provision
Provision, Ending Balance Individually Evaluated for Impairment	4.9	8.7
Provision, Ending Balance Collectively Evaluated for Impairment	0.4	0.4
Provision	5.3	9.1
Charge-offs and Recoveries, Individually Evaluated for Impairment	(3.2)	(1.7)
Charge-offs and Recoveries, Collectively Evaluated for Impairment	(0.3)	(0.1)
Charge-offs and recoveries	(3.5)	(1.8)
Domestic | Notes Receivable
Notes receivable:
Notes Receivable, Ending Balance Individually Evaluated for Impairment	10.3	20.7
Notes Receivable, Ending Balance Collectively Evaluated for Impairment	34.8	41.7
Notes receivable	45.1	62.4
Allowance for notes receivable
Allowance for notes receivable	(1.0)	(2.6)
International | Notes Receivable
Notes receivable:
Notes Receivable, Ending Balance Individually Evaluated for Impairment	112.3	101.8
Notes Receivable, Ending Balance Collectively Evaluated for Impairment	30.7	68.0
Notes receivable	143.0	169.8
Allowance for notes receivable
Allowance for notes receivable	$ (14.0)	$ (10.6)