Retirement Plans and Post Retirement Benefits Funded Status, Assumptions Used in Benefit Obligations and Amounts Recognized in Balance Sheets (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year balance		$ 364.1		$ 322.1
Service cost		3.8		3.5		$ 3.4
Interest cost		13.1		14.1		12.7
Actuarial (gain)/loss		(19.4)		37.4
Curtailments/settlements		0.0		9.4
Foreign exchange rate changes		(9.7)		(5.3)
Benefits paid		(21.1)		(17.1)
Benefit obligation, end of year balance		330.8		364.1		322.1
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance		268.0		270.3
Actual return on plan assets		(5.2)		10.2
Employer contribution		4.9		9.6
Foreign exchange rate changes		(9.2)		(5.0)
Benefits paid		(21.1)		(17.1)
Fair value of plan assets, end of year balance		237.4		268.0		270.3
Funded status		$ (93.4)		$ (96.1)
Weighted average assumptions for obligations as of measurement date [Abstract]
Discount rate		3.80%		3.80%
Rate of compensation increase		0.60%		0.60%
Amounts Recognized in Balance Sheet [Abstract]
Noncurrent pension assets, included in “Other assets”		$ 0.5		$ 0.6
Current pension liabilities, included in “Accounts payable and accrued liabilities”		(3.7)		(2.7)
Noncurrent pension liabilities, included in “Other long-term liabilities”		(90.2)		(93.8)
Total		(93.4)		(95.9)
Amounts recognized in other comprehensive income—pre-tax
Net actuarial loss		140.8		149.6
Prior service cost		9.0		9.5
Total		149.8		159.1
Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Accumulated benefit obligations		316.6		348.0
Fair value of plan assets		194.6		217.9
Plans with Projected Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligations		319.6		350.7
Fair value of plan assets		194.6		217.9
Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Net actuarial loss		5.3
Prior service cost		0.5
Total		5.8
Multi-strategy Funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[1]	26.1
Fair value of plan assets, end of year balance	[1]	84.2		26.1
Domestic stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	84.5
Fair value of plan assets, end of year balance	[2]	50.7		84.5
International stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	37.9
Fair value of plan assets, end of year balance	[2]	34.0		37.9
Domestic bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	62.5
Fair value of plan assets, end of year balance		32.1	[3]	62.5	[2]
International bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[3]	40.9
Fair value of plan assets, end of year balance	[3]	34.5		40.9
Diversified real asset funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[3]	13.9
Fair value of plan assets, end of year balance	[3]			13.9
Significant Unobservable Inputs (Level 3)
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance		26.1		41.7
Fair value of plan assets, end of year balance		13.3		26.1		41.7
Significant Unobservable Inputs (Level 3) | Multi-strategy Funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance		26.1	[1]	25.2
Fair value of plan assets, end of year balance		13.3	[1]	26.1	[1]	25.2
Significant Unobservable Inputs (Level 3) | Domestic stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	0.0
Fair value of plan assets, end of year balance	[2]	0.0		0.0
Significant Unobservable Inputs (Level 3) | International stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	0.0
Fair value of plan assets, end of year balance	[2]	0.0		0.0
Significant Unobservable Inputs (Level 3) | Domestic bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	0.0
Fair value of plan assets, end of year balance	[2]	0.0		0.0
Significant Unobservable Inputs (Level 3) | International bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	0.0
Fair value of plan assets, end of year balance	[2]	0.0		0.0
Significant Unobservable Inputs (Level 3) | Diversified real asset funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[3]	0.0
Fair value of plan assets, end of year balance	[3]			0.0
Significant Unobservable Inputs (Level 3) | Real Estate
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance		0.0		16.5
Fair value of plan assets, end of year balance		0.0		0.0		$ 16.5
Fair Value, Inputs, Level 1 [Member]
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance		160.6
Fair value of plan assets, end of year balance		153.7		160.6
Fair Value, Inputs, Level 1 [Member] | Multi-strategy Funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[1]	0.0
Fair value of plan assets, end of year balance	[1]	70.9		0.0
Fair Value, Inputs, Level 1 [Member] | Domestic stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	71.4
Fair value of plan assets, end of year balance	[2]	39.0		71.4
Fair Value, Inputs, Level 1 [Member] | International stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	12.8
Fair value of plan assets, end of year balance	[2]	11.7		12.8
Fair Value, Inputs, Level 1 [Member] | Domestic bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	62.5
Fair value of plan assets, end of year balance	[2]	32.1		62.5
Fair Value, Inputs, Level 1 [Member] | International bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	0.0
Fair value of plan assets, end of year balance	[2]	0.0		0.0
Fair Value, Inputs, Level 1 [Member] | Diversified real asset funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[3]	13.9
Fair value of plan assets, end of year balance	[3]			13.9
Fair Value, Inputs, Level 2
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance		81.3
Fair value of plan assets, end of year balance		70.4		81.3
Fair Value, Inputs, Level 2 | Multi-strategy Funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[1]	0.0
Fair value of plan assets, end of year balance	[1]	0.0		0.0
Fair Value, Inputs, Level 2 | Domestic stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	13.1
Fair value of plan assets, end of year balance	[2]	11.7		13.1
Fair Value, Inputs, Level 2 | International stock funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	25.1
Fair value of plan assets, end of year balance	[2]	22.3		25.1
Fair Value, Inputs, Level 2 | Domestic bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	0.0
Fair value of plan assets, end of year balance	[2]	0.0		0.0
Fair Value, Inputs, Level 2 | International bond funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[2]	40.9
Fair value of plan assets, end of year balance	[2]	34.5		40.9
Fair Value, Inputs, Level 2 | Diversified real asset funds
Change in Assets (Fair Value) [Roll Forward]
Fair value of plan assets, beginning of year balance	[3]	$ 0.0
Fair value of plan assets, end of year balance	[3]			$ 0.0
US Benefit Plans [Member] | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations		38.00%
Defined Benefit Plan, Actual Plan Asset Allocation		37.70%		50.40%
US Benefit Plans [Member] | Multi-strategy Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations		45.00%
Defined Benefit Plan, Actual Plan Asset Allocation		44.60%		12.40%
US Benefit Plans [Member] | All Asset Categories [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations		100.00%
Defined Benefit Plan, Actual Plan Asset Allocation		100.00%		100.00%
US Benefit Plans [Member] | Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations		17.00%
Defined Benefit Plan, Actual Plan Asset Allocation		17.00%		36.30%
Non-US Benefit Plans [Member] [Member] | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations		27.00%
Defined Benefit Plan, Actual Plan Asset Allocation		27.90%		28.00%
Non-US Benefit Plans [Member] [Member] | All Asset Categories [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations		100.00%
Defined Benefit Plan, Actual Plan Asset Allocation		100.00%		100.00%
Non-US Benefit Plans [Member] [Member] | Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations		71.00%
Defined Benefit Plan, Actual Plan Asset Allocation		71.20%		71.70%

[1] The multi-strategy funds invest in various hedge funds that employ a fund of funds strategy.

[2] Equity investments include investments in funds that are primarily invested in large capitalization U.S. and international equity securities and a mutual fund.

[3] Fixed income investments include investments in funds that are primarily invested in a diversified portfolio of investment grade U.S. and international debt securities.