Benefit Plans (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($) item	Dec. 31, 2016 USD ($)
Multiemployer Plans
Multiemployer benefit plan that company contributes to | item				1
Multiemployer Plan contributions	$ 13.0	$ 14.0	$ 12.0
Pension Plan
Benefit obligation
Balance at the beginning of the period	555.0
Balance at the end of the period	603.0	555.0
Postemployment Retirement Benefits
Benefit obligation
Balance at the beginning of the period	67.0	64.0
Service cost	1.0	1.0	1.0
Interest cost	3.0	2.0	3.0
Actuarial loss (gain)	2.0	2.0
Benefits paid	(4.0)	(4.0)
Foreign currency translation		2.0
Defined Benefit Plan, Benefit Obligation	67.0	64.0	64.0	$ 70.0	$ 67.0
Funded status				(70.0)	(67.0)
Amounts recognized in the Consolidated Balance Sheets
Current liabilities				(4.0)	(4.0)
Non-current liabilities				(66.0)	(63.0)
Net asset (liability) recognized				(70.0)	(67.0)
Amounts recognized in Accumulated Other Comprehensive Loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost
Net actuarial loss				11.0	7.0
Prior service cost				(6.0)	(8.0)
Net amount recognized				5.0	$ (1.0)
Components of Net Periodic Benefit Cost
Service cost	1.0	1.0	1.0
Interest cost	3.0	2.0	3.0
Amortization of prior service credit	(3.0)	(2.0)	(2.0)
Net periodic benefit cost	1.0	1.0	2.0
Total recorded in other comprehensive income and net periodic benefit cost	6.0	5.0	4.0
Amount related to the amortization of prior service cost included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year				$ (2.0)
Amounts recorded in other comprehensive income and net periodic benefit cost
Net actuarial loss (gain)	2.0	2.0	(2.0)
Prior service cost			2.0
Amortization of prior service credit	3.0	2.0	2.0
Total recorded in other comprehensive income	5.0	4.0	2.0
Net periodic benefit cost	$ 1.0	$ 1.0	$ 2.0
Weighted average assumptions used to determine the company's obligations
Discount rate (as a percent)				4.92%	5.42%
Weighted average assumptions used to determine the company's net periodic benefit cost
Discount rate (as a percent)	5.46%	5.30%	5.70%
Sensitivity to Trend Assumptions
One-percentage point increase, effect on service cost and interest cost components	$ 1.0
One-percentage point increase, effect on year-end benefit obligations	7.0
One-percentage point decrease, effect on service cost and interest cost components	(1.0)
One-percentage point decrease, effect on year-end benefit obligations	(6.0)
Expected future benefit payments
2018				$ 4.0
2019				4.0
2020				4.0
2021				4.0
2022				5.0
Years 2023 - 2027				24.0
US
Benefit obligation
Service cost			$ 8.0
Interest cost			14.0
Components of Net Periodic Benefit Cost
Service cost			8.0
Interest cost			14.0
Net periodic benefit cost		$ 1.0	(2.0)
Amounts recorded in other comprehensive income and net periodic benefit cost
Net actuarial loss (gain)		10.0
Prior service cost		(6.0)
Total recorded in other comprehensive income		3.0
Net periodic benefit cost		1.0	(2.0)
Total recorded in other comprehensive income and net periodic benefit cost		4.0	(2.0)
US | Pension Plan
Benefit obligation
Balance at the beginning of the period	367.0	359.0
Balance at the beginning of the period	367.0
Service cost	6.0	6.0
Interest cost	13.0	14.0
Actuarial loss (gain)	30.0	10.0
Benefits paid	(23.0)	(16.0)
Defined Benefit Plan, Benefit Obligation	367.0	359.0	$ 359.0		$ 367.0
Balance at the end of the period	393.0	367.0
Funded status				11.0	1.0
Amounts recognized in the Consolidated Balance Sheets
Current liabilities				(2.0)	(1.0)
Non-current liabilities				(10.0)	(10.0)
Net asset (liability) recognized				11.0	1.0
Amounts recognized in Accumulated Other Comprehensive Loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost
Net actuarial loss				21.0	28.0
Prior service cost				(6.0)	(6.0)
Net amount recognized				15.0	$ 22.0
Components of Net Periodic Benefit Cost
Service cost	6.0	6.0
Interest cost	13.0	14.0
Amortization of prior service credit	(1.0)
Net periodic benefit cost	(3.0)	1.0
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year				$ 1.0
Amounts recorded in other comprehensive income and net periodic benefit cost
Net actuarial loss (gain)	(7.0)
Amortization of prior service credit	1.0
Total recorded in other comprehensive income	(6.0)
Net periodic benefit cost	(3.0)	$ 1.0
Total recorded in other comprehensive income and net periodic benefit cost	$ (9.0)
Weighted average assumptions used to determine the company's obligations
Discount rate (as a percent)				3.70%	4.30%
Weighted average assumptions used to determine the company's net periodic benefit cost
Discount rate (as a percent)	4.30%	4.30%	4.00%
Expected future benefit payments
2018				$ 21.0
2019				20.0
2020				21.0
2021				22.0
2022				23.0
Years 2023 - 2027				$ 124.0
US | Postemployment Retirement Benefits
Assumptions used in measuring benefit obligation
2017 increase in per capita cost (as a percent)				6.50%
Ultimate trend (as a percent)				4.50%
Non-US
Benefit obligation
Service cost			$ 4.0
Interest cost			12.0
Components of Net Periodic Benefit Cost
Service cost			4.0
Interest cost			12.0
Net periodic benefit cost		$ 6.0	6.0
Amounts recorded in other comprehensive income and net periodic benefit cost
Net actuarial loss (gain)		6.0	(18.0)
Prior service cost		(1.0)
Total recorded in other comprehensive income		3.0	(21.0)
Net periodic benefit cost		6.0	6.0
Total recorded in other comprehensive income and net periodic benefit cost		9.0	(15.0)
Non-US | Pension Plan
Benefit obligation
Balance at the beginning of the period	$ 223.0	219.0
Balance at the beginning of the period	223.0
Service cost	3.0	3.0
Interest cost	11.0	10.0
Actuarial loss (gain)	7.0	6.0
Benefits paid	(12.0)	(15.0)
Foreign currency translation	16.0	5.0
Defined Benefit Plan, Benefit Obligation	223.0	219.0	$ 219.0		$ 223.0
Balance at the end of the period	248.0	223.0
Funded status				$ (13.0)	(12.0)
Amounts recognized in the Consolidated Balance Sheets
Current liabilities				(1.0)	(1.0)
Non-current liabilities				(49.0)	(40.0)
Net asset (liability) recognized				(13.0)	(12.0)
Amounts recognized in Accumulated Other Comprehensive Loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost
Net actuarial loss				55.0	52.0
Prior service cost				(1.0)	(1.0)
Net amount recognized				55.0	$ 52.0
Components of Net Periodic Benefit Cost
Service cost	3.0	3.0
Interest cost	11.0	10.0
Net periodic benefit cost	6.0	6.0
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year				$ (2.0)
Amounts recorded in other comprehensive income and net periodic benefit cost
Net actuarial loss (gain)	(3.0)
Total recorded in other comprehensive income	(5.0)
Net periodic benefit cost	6.0	$ 6.0
Total recorded in other comprehensive income and net periodic benefit cost	$ 1.0
Weighted average assumptions used to determine the company's obligations
Discount rate (as a percent)				4.02%	4.34%
Weighted average assumptions used to determine the company's net periodic benefit cost
Discount rate (as a percent)	4.34%	4.57%	4.47%
Expected future benefit payments
2018				$ 11.0
2019				12.0
2020				12.0
2021				12.0
2022				12.0
Years 2023 - 2027				$ 70.0
Canadian Plans | Postemployment Retirement Benefits
Assumptions used in measuring benefit obligation
2017 increase in per capita cost (as a percent)				5.54%
Ultimate trend (as a percent)				4.50%
BRAZIL | Postemployment Retirement Benefits
Assumptions used in measuring benefit obligation
2017 increase in per capita cost (as a percent)				8.41%
Ultimate trend (as a percent)				8.41%