Acquisitions (Details) - USD ($) $ in Millions	6 Months Ended	9 Months Ended
	Jun. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Sep. 01, 2015
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 63.9
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	13.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	48.5
Business Acquisition Purchase Price Allocation Other Current Assets	1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	37.9
Business Combination Purchase Price Allocation Goodwill Amount	71.5
Business Combination Adjusted Purchase Price Allocation Goodwill Amount [Line Items]	328.7		$ 327.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	63.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	236.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	10.2
Business Combination Purchase Price Allocation Current Liabilities Accrued Liabilities	1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	1.3
Business Combination Pension Liability	2.3
business combination postretirement liability assumed	1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	5.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	21.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	214.3
Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 17.1
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	20 years
Computer Software, Intangible Asset [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 1.2
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Trade Names [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 1.7
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	11 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 43.9
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	20 years
Acquisition-related Costs [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables				$ 13.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory				48.5
Business Acquisition Purchase Price Allocation Other Current Assets				1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				37.9
Business Combination Purchase Price Allocation Goodwill Amount				70.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				63.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				235.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable				10.2
Business Combination Purchase Price Allocation Current Liabilities Accrued Liabilities				1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other				1.3
Business Combination Pension Liability				2.3
business combination postretirement liability assumed				1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other				5.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				21.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				213.6
Carlstar [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents				$ 0.1
Business Combination Adjusted Purchase Price Allocation Goodwill Amount [Line Items]	$ 0.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	$ 0.0