Debt, Summary of Debt (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	May 31, 2017	Dec. 31, 2016
Debt [Abstract]
Short-term borrowings		$ 0.0		$ 0.0
Long-term debt [Abstract]
Unamortized debt issuance costs		(4.9)		(58.9)
Total long-term debt, net, including current maturities		2,040.2		2,778.3
Current maturities of long-term debt		20.9		24.5
Total long-term debt, net		2,019.3		2,753.8
Revolving Credit Facility, Due 2020 [Member]
Long-term debt [Abstract]
Long-term debt		$ 0.0		0.0
Debt instrument maturity date		Apr. 30, 2020
Receivables Financing Agreement, Due 2020 [Member]
Long-term debt [Abstract]
Long-term debt		$ 0.0		0.0
Debt instrument maturity date		Jun. 30, 2020
Term Loan Denominated in U.S. Dollars Due 2020 [Member]
Long-term debt [Abstract]
Long-term debt	[1],[2]	$ 0.0		$ 1,833.2
Debt instrument maturity date		Dec. 31, 2020
Weighted-average interest rate		4.56%		4.25%
Unamortized discounts			$ 0.7	$ 5.0
Term Loan Denominated in Euros Due 2020 [Member]
Long-term debt [Abstract]
Long-term debt	[3],[4]	$ 0.0		$ 405.5
Debt instrument maturity date		Dec. 31, 2020
Weighted-average interest rate		4.75%		4.75%
Unamortized discounts				$ 1.4
Term Loan Denominated in U.S. Dollars, Due 2024 [Member]
Long-term debt [Abstract]
Long-term debt	[5]	$ 1,282.3		0.0
Debt instrument maturity date		Dec. 31, 2024
Interest rate		4.44%
Weighted-average interest rate		4.07%
Term Loan Denominated in Euros, Due 2024 [Member]
Long-term debt [Abstract]
Long-term debt	[6]	$ 735.9		0.0
Debt instrument maturity date		Dec. 31, 2024
Interest rate		3.00%
Weighted-average interest rate		3.00%
Senior Notes Due 2021 [Member]
Long-term debt [Abstract]
Long-term debt	[7]	$ 0.0		575.0
Debt instrument maturity date		Aug. 15, 2021
Interest rate		6.875%
Second Mortgages [Member]
Long-term debt [Abstract]
Long-term debt	[8]	$ 0.0		1.9
Interest rate		4.80%
Capitalized Leases and Other Long-Term Debt [Member]
Long-term debt [Abstract]
Long-term debt		$ 26.9		$ 21.6

[1] The weighted-average interest rate was 4.56% for the period from January 1, 2017 through August 17, 2017 and 4.25% for the year ended December 31, 2016.

[2] This amount is shown net of unamortized discounts of $5.0 million as of December 31, 2016.

[3] The weighted-average interest rate was 4.75% for the period from January 1, 2017 through August 17, 2017 and 4.75% for the year ended December 31, 2016.

[4] This amount is shown net of unamortized discounts of $1.4 million as of December 31, 2016.

[5] As of December 31, 2017, the applicable interest rate was 4.44% and the weighted-average rate was 4.07% for the period from August 17, 2017 through December 31, 2017.

[6] As of December 31, 2017, the applicable interest rate was 3.00% and the weighted-average rate was 3.00% for the period from August 17, 2017 through December 31, 2017.

[7] This amount consists of the $575.0 million aggregate principal 6.875% senior notes due 2021 that were entered into in connection with the KKR transaction on July 30, 2013. Interest on the Senior Notes is payable on February 15 and August 15 of each year. The senior notes were redeemed in May 2017.

[8] This amount consists of a fixed-rate 4.80% commercial loan secured by the Company's facility in Bad Neustadt, Germany. The mortgage was paid in December 2017.