Accrued Liabilities and Other Long-Term Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Accrued Liabilities and Other Long-Term Liabilities [Line Items]
Multiemployer pension plans – withdrawal liability	$ 44.1
Restructuring liabilities	24.5	$ 27.8	$ 29.5
Accrued Liabilities
Schedule of Accrued Liabilities and Other Long-Term Liabilities [Line Items]
Employee-related liabilities(1)	129.4	122.4
Single employer pension plan obligations	1.8	1.7
Multiemployer pension plans – withdrawal liability	8.4	8.4
Tax-related liabilities	24.6	29.5
Restructuring liabilities	15.8	23.1
Interest and rent liabilities	4.9	6.0
Held-For-Sale Liabilities, Continuing Operations	17.9	0.0
Other	100.2	94.0
Total Accrued Liabilities and Other Liabilities	303.0	285.1
Other Noncurrent Liabilities
Schedule of Accrued Liabilities and Other Long-Term Liabilities [Line Items]
Employee-related liabilities(1)	61.9	62.8
Single employer pension plan obligations	77.1	80.9
Multiemployer pension plans – withdrawal liability	35.7	42.5
Tax-related liabilities	10.7	8.1
Restructuring liabilities	7.4	2.9
Interest and rent liabilities	0.2	1.4
Held-For-Sale Liabilities, Continuing Operations	0.0	0.0
Other	28.1	33.2
Total Accrued Liabilities and Other Liabilities	221.1	231.8
Accrued Liabilities and Other Noncurrent Liabilities
Schedule of Accrued Liabilities and Other Long-Term Liabilities [Line Items]
Employee-related liabilities(1)	191.3	185.2
Single employer pension plan obligations	78.9	82.6
Multiemployer pension plans – withdrawal liability	44.1	50.9
Tax-related liabilities	35.3	37.6
Restructuring liabilities	23.2	26.0
Interest and rent liabilities	5.1	7.4
Held-For-Sale Liabilities, Continuing Operations	17.9	0.0
Other	128.3	127.2
Total Accrued Liabilities and Other Liabilities	$ 524.1	$ 516.9