Business Acquisitions, Goodwill and Acquired Intangible Assets (Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 2,050.5	$ 1,735.2	$ 1,776.7
Acquisitions In 2019
Business Acquisition [Line Items]
Current assets, excluding cash acquired	83.0
Property, plant and equipment	30.7
Goodwill	304.9
Acquired intangible assets	122.3
Other long-term assets	7.1
Total assets acquired	548.0
Current liabilities	(33.4)
Long-term liabilities	(30.6)
Total liabilities assumed	(64.0)
Cash paid, net of cash acquired	$ 484.0