Business Combinations (Separately Recognized Transactions) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Dec. 30, 2016
Business Acquisition [Line Items]
Goodwill	$ 2,128.6	$ 2,077.6
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Fair value of total purchase consideration	98.7
Net tangible assets acquired	4.8
Identifiable intangible assets	59.0
Deferred income taxes	(2.1)
Goodwill	$ 37.0