Business Acquistions, Goodwill and Acquired Intangible Assets (Goodwill and Intangible Assets Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 2,050.5	$ 1,735.2	$ 1,776.7
Acquired intangible assets, net	430.8	344.3
Amortization of intangible assets	37.4	$ 39.5	$ 41.4
Amortization expense 2020	38.5
Amortization expense 2021	37.1
Amortization expense 2022	34.3
Amortization expense 2023	30.5
Amortization expense 2024	$ 28.7
Minimum
Business Acquisition [Line Items]
Useful life	1 year
Maximum
Business Acquisition [Line Items]
Useful life	15 years