Retirement Plans and Post Retirement Benefits Asset Allocation and Fair Value of Plan Assets (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		$ 237.4		$ 268.0		$ 270.3
Quoted Prices in Active Markets for Identical Assets (Level 1)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		153.7		160.6
Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		70.4		81.3
Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Mangement fees		(0.2)		(0.1)
Defined benefit plan, fair value of plan assets		13.3		26.1		41.7
Domestic stock funds
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	50.7		84.5
Domestic stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	39.0		71.4
Domestic stock funds | Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	11.7		13.1
Domestic stock funds | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	0.0		0.0
International stock funds
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	34.0		37.9
International stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	11.7		12.8
International stock funds | Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	22.3		25.1
International stock funds | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	0.0		0.0
Domestic bond funds
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		32.1	[2]	62.5	[1]
Domestic bond funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	32.1		62.5
Domestic bond funds | Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	0.0		0.0
Domestic bond funds | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	0.0		0.0
International bond funds
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[2]	34.5		40.9
International bond funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	0.0		0.0
International bond funds | Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	34.5		40.9
International bond funds | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[1]	0.0		0.0
Diversified real asset funds
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[2]			13.9
Diversified real asset funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[2]			13.9
Diversified real asset funds | Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[2]			0.0
Diversified real asset funds | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[2]			0.0
Real Estate | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		0.0		0.0		16.5
Multi-strategy Funds
Target Allocations [Abstract]
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)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[3]	70.9		0.0
Multi-strategy Funds | Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets	[3]	0.0		0.0
Multi-strategy Funds | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Mangement fees		(0.2)		(0.1)
Defined benefit plan, fair value of plan assets		13.3	[3]	26.1	[3]	$ 25.2
Cash and Cash Equivalents
Target Allocations [Abstract]
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)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		0.0		0.0
Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		1.9		2.2
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3)
Target Allocations [Abstract]
Defined benefit plan, fair value of plan assets		$ 0.0		$ 0.0
US Benefit Plans [Member] | Equity Securities
Target Allocations [Abstract]
Equity securities		38.00%
Defined Benefit Plan, Actual Plan Asset Allocation		37.70%		50.40%
US Benefit Plans [Member] | Debt Securities
Target Allocations [Abstract]
Equity securities		17.00%
Defined Benefit Plan, Actual Plan Asset Allocation		17.00%		36.30%
US Benefit Plans [Member] | Multi-strategy Funds
Target Allocations [Abstract]
Equity securities		45.00%
Defined Benefit Plan, Actual Plan Asset Allocation		44.60%		12.40%
US Benefit Plans [Member] | All Asset Categories [Member]
Target Allocations [Abstract]
Equity securities		100.00%
Defined Benefit Plan, Actual Plan Asset Allocation		100.00%		100.00%
US Benefit Plans [Member] | Cash and Cash Equivalents
Target Allocations [Abstract]
Equity securities		0.00%
Defined Benefit Plan, Actual Plan Asset Allocation		0.70%		0.90%
Non-US Benefit Plans [Member] [Member] | Equity Securities
Target Allocations [Abstract]
Equity securities		27.00%
Defined Benefit Plan, Actual Plan Asset Allocation		27.90%		28.00%
Non-US Benefit Plans [Member] [Member] | Debt Securities
Target Allocations [Abstract]
Equity securities		71.00%
Defined Benefit Plan, Actual Plan Asset Allocation		71.20%		71.70%
Non-US Benefit Plans [Member] [Member] | All Asset Categories [Member]
Target Allocations [Abstract]
Equity securities		100.00%
Defined Benefit Plan, Actual Plan Asset Allocation		100.00%		100.00%
Non-US Benefit Plans [Member] [Member] | Cash and Cash Equivalents
Target Allocations [Abstract]
Equity securities		2.00%
Defined Benefit Plan, Actual Plan Asset Allocation		0.90%		0.30%

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

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

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