Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Operating Activities
Net income	$ 402.3	$ 333.8	$ 227.2
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization	111.9	113.0	113.0
Stock-based compensation	30.7	25.1	18.8
Changes in operating assets and liabilities, excluding the effect of businesses acquired:
Accounts receivable	(58.8)	(66.7)	(19.6)
Inventories	12.2	(1.7)	(7.4)
Prepaid expenses and other assets	2.8	7.6	(3.6)
Accounts payable	29.6	39.9	12.4
Accrued liabilities	5.9	17.8	16.2
Deferred and income taxes payable, net	(53.8)	(26.4)	28.1
Long-term assets	(8.1)	4.9	(13.8)
Other long-term liabilities	11.9	(13.7)	(2.2)
Other, net	(4.5)	13.3	5.6
Net cash provided by operating activities	482.1	446.9	374.7
Investing Activities
Purchases of property, plant and equipment	(88.4)	(86.8)	(58.5)
Purchase of businesses and other investments, net of cash acquired	(484.0)	(3.1)	(774.1)
Other, net	(0.5)	(1.3)	(1.4)
Net cash used in investing activities	(571.9)	(88.6)	(831.2)
Financing Activities
Net proceeds (payments) on credit facility	96.0		165.0
Net proceeds (payments) on credit facility		(136.0)
Proceeds from other debt	0.0	11.5	100.0
Payments on other debt	(137.2)	(182.0)	(139.3)
Proceeds from issuance of term loans and senior notes	150.0	0.0	268.0
Proceeds from stock options exercised	34.6	37.2	24.9
Other, net	(1.7)	(2.0)	(4.5)
Net cash provided by (used in) financing activities	141.7	(271.3)	414.1
Effect of exchange rate changes on cash	5.1	(15.4)	14.7
Change in cash	57.0	71.6	(27.7)
Cash—beginning of period	142.5	70.9	98.6
Cash—end of period	$ 199.5	$ 142.5	$ 70.9