Acquisitions - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Components of purchase price:
Cash paid, net of cash acquired			$ 44.6	$ 28.1
Allocation of purchase price:
Goodwill	$ 1,817.0		1,817.0		$ 1,853.6
Contribution to results:
Net sales	1,081.2	$ 1,102.7	2,110.8	2,159.3
Operating income	77.6	$ 62.0	151.4	$ 139.0
Series of Individually Immaterial Business Acquisitions [Member]
Components of purchase price:
Cash paid, net of cash acquired			44.6
Estimated fair value of contingent consideration			13.4
Deferred purchase price, net of (settlements)			(2.4)
Purchase price			55.6
Allocation of purchase price:
Net tangible assets	5.5		5.5
Identifiable intangible assets	16.9		16.9
Goodwill	33.2		33.2
Purchase price	55.6		$ 55.6
Weighted average life of acquired amortizable intangible assets			9 years 8 months 12 days
Goodwill expected to be tax deductible	16.1		$ 16.1
Contribution to results:
Net sales	4.9		6.3
Operating income	$ 0.7		$ 0.8