Debt and Credit Facilities - Total Debt Outstanding (Details) € in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 EUR (€)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 EUR (€)
Debt Instrument [Line Items]
Document Period End Date	Jun. 30, 2019
Short-term borrowings	$ 265.3		$ 232.8
Current portion of long-term debt	31.6		4.9
Total current debt	296.9		237.7
Other	85.5		29.2
Total long-term debt, less current portion	3,291.7		3,236.5
Total debt	3,588.6		3,474.2
Unamortized discounts ands issuance costs	$ 22.2		$ 24.3
Short-term debt, weighted average interest rate	3.00%	3.00%	2.80%	2.80%
Long-term debt, weighted average interest rate	5.40%	5.40%	5.40%	5.40%
ASU 2016-02
Debt Instrument [Line Items]
Current portion of long-term debt	$ 31.6
Other	82.7
Revolving Credit Facility
Debt Instrument [Line Items]
Short-term borrowings	178.0		$ 140.0
Line of Credit
Debt Instrument [Line Items]
Short-term borrowings	8.8		8.9
European Accounts Receivable Securitization Program | European Program
Debt Instrument [Line Items]
Amount of borrowing under securitization program	$ 78.5	€ 69.0	83.9	€ 73.3
6.50% Senior Notes due December 2020
Debt Instrument [Line Items]
Debt interest rate	6.50%	6.50%
Senior notes	$ 424.3		424.0
4.875% Senior Notes due December 2022
Debt Instrument [Line Items]
Debt interest rate	4.875%	4.875%
Senior notes	$ 421.5		421.1
5.25% Senior Notes due April 2023
Debt Instrument [Line Items]
Debt interest rate	5.25%	5.25%
Senior notes	$ 421.6		421.2
4.50% Senior Notes due September 2023
Debt Instrument [Line Items]
Debt interest rate	4.50%	4.50%
Senior notes	$ 452.1		454.9
5.125% Senior Notes due December 2024
Debt Instrument [Line Items]
Debt interest rate	5.125%	5.125%
Senior notes	$ 421.6		421.3
5.50% Senior Notes due September 2025
Debt Instrument [Line Items]
Debt interest rate	5.50%	5.50%
Senior notes	$ 397.2		397.1
6.875% Senior Notes due July 2033
Debt Instrument [Line Items]
Debt interest rate	6.875%	6.875%
Senior notes	$ 445.6		445.5
Term Loan A due July 2023
Debt Instrument [Line Items]
Term loans	$ 222.3		$ 222.2