Acquisitions and Divestitures - Purchase Price Allocation Identifiable Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2015
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Document Period End Date									Dec. 31, 2017
Business Combination Pension Liability											$ 2.3
Accounts receivable											13.3
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 27.9					$ 27.9
Inventories											48.5
Property, plant and equipment											37.9
Goodwill											70.8
Other intangible assets											63.9
Net sales	$ 778.0	$ 771.4	$ 750.6	$ 703.8	654.8	$ 657.4	$ 673.6	$ 684.0	$ 3,003.8	$ 2,669.8	2,872.3	$ 20.6
business combination postretirement liability assumed											1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other											1.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets											0.0
Total assets acquired											235.5
Accounts payable, trade											10.2
Salaries, wages and benefits											1.1
Other current liabilities											1.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt											0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities											5.9
Other non-current liabilities											0.0
Total liabilities assumed											21.9
Net assets acquired											213.6
Technology-Based Intangible Assets [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									16 years	19 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	29.8				10.1				$ 29.8	$ 10.1
Trade names [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									13 years	5 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	2.2				0.2				$ 2.2	$ 0.2
Customer Relationships [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									17 years	20 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	108.9				13.5				$ 108.9	$ 13.5
Software and Software Development Costs [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									3 years	4 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	1.4				0.1				$ 1.4	$ 0.1
Trade names [Member]
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired	31.1				3.7				$ 31.1	$ 3.7
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life									0 years	0 years
2017 Acquisitions [Member]
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Business Combination Pension Liability	0.0								$ 0.0
Accounts receivable	27.6								$ 27.6
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	173.6								$ 173.6
Inventories	29.4								29.4
Property, plant and equipment	31.5								31.5
Goodwill	149.7								149.7
Other intangible assets	173.6								173.6
business combination postretirement liability assumed	0.0								0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	3.3								3.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	1.8								1.8
Total assets acquired	416.9								416.9
Accounts payable, trade	9.5								9.5
Salaries, wages and benefits	5.8								5.8
Other current liabilities	8.6								8.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	2.9								2.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	42.2								42.2
Other non-current liabilities	1.0								1.0
Total liabilities assumed	70.1								70.1
Net assets acquired	346.8								346.8
2016 Acquisitions [Member]
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Business Combination Pension Liability					0.0					$ 0.0
Accounts receivable					8.4					8.4
Business Acquisition Purchase price allocation identifiable intangible assets
Inventories					17.8					17.8
Property, plant and equipment					16.5					16.5
Goodwill					30.6					30.6
Other intangible assets					27.9					27.9
business combination postretirement liability assumed					0.0					0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other					5.3					5.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets					0.1					0.1
Total assets acquired					106.6					106.6
Accounts payable, trade					8.1					8.1
Salaries, wages and benefits					1.3					1.3
Other current liabilities					4.4					4.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt					2.2					2.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities					10.4					10.4
Other non-current liabilities					7.6					7.6
Total liabilities assumed					34.0					34.0
Net assets acquired					72.6					72.6
Short-term Debt [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other current liabilities											$ 0.0
Short-term Debt [Member] | 2017 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other current liabilities	$ 0.1								$ 0.1
Short-term Debt [Member] | 2016 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other current liabilities					$ 0.0					$ 0.0