Acquisitions and Divestitures - Purchase Price Allocation Identifiable Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Business Combination Pension Liability	$ 2.3				$ 0.0				$ 2.3		$ 0.0	$ 0.0
Accounts receivable	13.3				4.5				$ 13.3		$ 4.5	10.6
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									19 years 5 months		14 years 6 months
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	63.9				7.5				$ 63.9		$ 7.5
Inventories	48.5				5.4				48.5		5.4	12.7
Property, plant and equipment	37.9				2.8				37.9		2.8	19.5
Goodwill	70.8				4.7				70.8		4.7	18.1
Other intangible assets	63.9				7.5				63.9		7.5	13.0
Net sales	714.4	$ 707.4	$ 728.0	$ 722.5	762.2	$ 788.0	$ 789.2	$ 736.8	2,872.3	$ 20.6	3,076.2	3,035.4
business combination postretirement liability assumed	1.1				0.0				$ 1.1		$ 0.0	$ 0.0
Know-how [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									20 years		17 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	17.1				2.6				$ 17.1		$ 2.6
Customer Relationships [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life											15 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					4.2						$ 4.2
Noncompete Agreements [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life											5 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					0.1						$ 0.1
Software and Software Development Costs [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									3 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	1.2								$ 1.2
Customer Relationships [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									20 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	43.9								$ 43.9
Trade names [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									11 years		7 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 1.7				$ 0.6				$ 1.7		$ 0.6