Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016	Dec. 31, 2015
Non-cash Activities [Abstract]
Fair value of assets of acquired businesses	$ 374.3	$ 1,672.7
Cash paid for acquired businesses	(317.7)	(1,110.1)
Liabilities assumed of acquired businesses	56.6	562.6
Declared but unpaid dividends	59.9	60.6
Issuance of stock upon vesting of restricted stock units	37.7	48.7
Cash and Cash Equivalents	611.0		$ 786.2
Restricted Cash Included in Other Current Assets	15.8		18.0
Restricted Cash Included in Other Assets	2.5		6.6
Cash, Cash Equivalents and Restricted Cash	$ 629.3	$ 689.8	$ 810.8	$ 466.3
Restricted Cash and Cash Equivalents, Current, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsCurrent
Restricted Cash and Cash Equivalents, Noncurrent, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent