Retirement Plans and Post Retirement Benefits Pension Costs, Assumptions Used in Net Periodic Costs and Expected Contributions and Payments (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss		$ (5.3)
Defined Benefit Plan, Benefit Obligation		330.8		$ 364.1		$ 322.1
Defined Benefit Plan, Accumulated Benefit Obligation		328.2		361.5
Noncurrent pension assets, included in “Other assets”		0.5		0.6
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation		316.6		348.0
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets		194.6		217.9
Defined benefit plan, fair value of plan assets		237.4		268.0		270.3
Defined Benefit Plan, Benefits Paid		$ 21.1		17.1
Maximum benefit amortization period		20 years
Approximate percentage of assets represented by most significant plans		80.00%
Approximate percentage of benefit obligations represented by most significant plans		85.00%
Rate of eligible compensation increase		4.00%
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost		$ 3.8		3.5		3.4
Interest cost		13.1		14.1		12.7
Expected return on plan assets		(15.0)		(16.9)		(16.5)
Amortization of prior service cost		0.5		0.0		0.3
Amortization of net actuarial loss		6.8		5.5		7.3
Net periodic pension cost		9.2		6.2		7.2
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments		$ 0.8		$ 0.0		$ 0.0
Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate		3.80%		4.60%		3.80%
Rate of compensation increase		0.70%		0.80%		0.70%
Expected return on plan assets		6.00%		6.70%		6.60%
Other changes in plan assets and benefit obligations recognized in other comprehensive incom [Abstract]
Net actuarial (gain) loss		$ 0.8		$ 44.2		$ (35.9)
Amortization of net actuarial loss		(7.6)		(5.5)		(7.3)
Amortization of prior service cost		(0.5)		9.4		(0.3)
Foreign exchange rate changes		(0.1)		0.0		0.2
Total recognized in OCI		(7.4)		48.1		(43.3)
Benefits Expected to be Paid from Benefit Plans [Abstract]
2014		22.6
2015		27.6
2016		19.1
2017		19.6
2018		20.3
2019 - 2023		105.4
Defined Benefit Plan, Actuarial Gain (Loss)		(19.4)		37.4
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets		(9.2)		(5.0)
Defined Benefit Plan, Curtailments		0.0		9.4
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)		(9.7)		(5.3)
Defined Benefit Plan, Actual Return on Plan Assets		(5.2)		10.2
Defined Benefit Plan, Contributions by Employer		4.9		9.6
Defined Benefit Plan, Funded Status of Plan		$ (93.4)		$ (96.1)
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		3.80%		3.80%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase		0.60%		0.60%
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)
Net actuarial loss		(140.8)		(149.6)
Prior service cost		9.0		9.5
Total		149.8		159.1
Prior service cost		0.5
Total		5.8
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		153.7		160.6
Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		70.4		81.3
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		13.3		26.1		41.7
Diversified real asset funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[1]			13.9
Diversified real asset funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[1]			13.9
Diversified real asset funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[1]			0.0
Diversified real asset funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[1]			0.0
Domestic stock funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	50.7		84.5
Domestic stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	39.0		71.4
Domestic stock funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	11.7		13.1
Domestic stock funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	0.0		0.0
International stock funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	34.0		37.9
International stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	11.7		12.8
International stock funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	22.3		25.1
International stock funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	0.0		0.0
International bond funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[1]	34.5		40.9
International bond funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	0.0		0.0
International bond funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	34.5		40.9
International bond funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[2]	0.0		0.0
Real Estate | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		0.0		0.0		16.5
Multi-strategy Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[3]	84.2		26.1
Multi-strategy Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[3]	70.9		0.0
Multi-strategy Funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	[3]	0.0		0.0
Multi-strategy Funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		13.3	[3]	26.1	[3]	$ 25.2
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		1.9		2.2
Cash and Cash Equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		0.0		0.0
Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		1.9		2.2
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		$ 0.0		$ 0.0

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

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