Receivables (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2020	Sep. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 26.3	$ 22.4
Additions - charged to expense	1.8	3.6
Transfer from (to) allowance for credit losses (see below)	(2.9)	3.4
Net recoveries, write-offs and other	(2.3)	(3.1)
Ending Balance	22.9
Allowance for long term customer receivables [Roll Forward]
Beginning balance	61.1	60.5
Additions - charged to expense	(1.1)	17.6
Transfer from (to) allowance for doubtful accounts (see above)	2.9	(3.4)
Foreign currency adjustments	(8.0)	(0.5)
Net recoveries, write-offs and other		$ (13.1)
Ending balance	54.9
Net long-term customer receivables	$ 125.7