Debt (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Short-term borrowings	$ 14.3	$ 28.9
Long-term Debt Types [Abstract]
Total long-term debt	1,629.3	1,525.1
Total Debt	1,643.6	1,554.0
Long Term Debt By Current And Noncurrent [Abstract]
Current liabilities	88.8	82.4
Noncurrent liabilities	1,554.8	1,471.6
Interest Rate And Other Disclosures [Abstract]
Debt issue costs	5.5	4.7
Term Loan A | Senior Secured Credit Facility - Amended
Long-term Debt Types [Abstract]
Long-term Debt	$ 767.0
Interest Rate And Other Disclosures [Abstract]
Effective interest rate	3.50%
Debt issue costs	$ 3.0
Term Loan A | Senior Secured Credit Facility - Original
Long-term Debt Types [Abstract]
Long-term Debt		$ 466.9
Interest Rate And Other Disclosures [Abstract]
Effective interest rate		4.30%
Debt issue costs		$ 1.8
Senior unsecured notes | Six hundred million senior unsecured notes
Long-term Debt Types [Abstract]
Long-term Debt	$ 592.9	$ 592.0
Interest Rate And Other Disclosures [Abstract]
Effective interest rate	4.60%	4.60%
Debt issue costs	$ 7.1	$ 8.0
Revolving Credit Facility
Long-term Debt Types [Abstract]
Debt	$ 115.0	$ 340.0
Interest Rate And Other Disclosures [Abstract]
Average interest rate	3.50%	4.20%
Other Non-US Dollar-denominated Facilities
Long-term Debt Types [Abstract]
Debt	$ 4.9	$ 5.7
Interest Rate And Other Disclosures [Abstract]
Average interest rate	7.00%	4.80%
Financing leases
Long-term Debt Types [Abstract]
Financing leases	$ 149.5	$ 120.5
Interest Rate And Other Disclosures [Abstract]
Average interest rate	4.20%	4.40%
Restricted Cash Borrowings
Debt Instrument [Line Items]
Short-term borrowings	$ 10.3	$ 10.5
Interest Rate And Other Disclosures [Abstract]
Short-term borrowings interest rate	0.00%	0.00%
Other
Debt Instrument [Line Items]
Short-term borrowings	$ 4.0	$ 18.4
Interest Rate And Other Disclosures [Abstract]
Short-term borrowings interest rate	8.80%	10.10%