Condensed Consolidated Statements Of Cash Flows (unaudited) - USD ($) $ in Millions	9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020
Cash flow from operating activities:
Net income	$ 377.5	$ 209.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	30.9	29.4
Amortization expense	105.1	120.2
Deferred income taxes	(8.9)	12.1
Stock-based compensation	95.1	57.1
Divestitures (gain) loss, net	(43.6)	2.5
Other, net	5.7	26.2
(Increase) decrease in assets:
Accounts receivable, net	33.7	108.4
Inventories	(28.4)	(19.1)
Other current and non-current assets	(42.5)	12.3
Increase (decrease) in liabilities:
Accounts payable	50.8	(26.7)
Accrued compensation and benefits	25.1	26.1
Deferred revenue	(8.4)	(42.0)
Other current and non-current liabilities	3.1	(32.7)
Net cash provided by operating activities	595.2	483.7
Cash flow from investing activities:
Acquisitions of businesses, net of cash acquired	(1.2)	(198.9)
Purchases of property and equipment	(31.4)	(45.1)
Net proceeds from sale of businesses	67.3	0.0
Net proceeds from sale of property and equipment	20.7	0.4
Other, net	(4.4)	(0.5)
Net cash provided by (used in) investing activities	51.0	(244.1)
Cash flow from financing activities:
Issuance of common stock, net of tax withholdings	1.1	25.3
Repurchases of common stock	(140.0)	(78.0)
Proceeds from debt and revolving credit lines	198.9	1,030.1
Payments on debt and revolving credit lines	(421.7)	(1,209.6)
Other, net	(1.5)	(10.9)
Net cash used in financing activities	(363.2)	(243.1)
Effect of exchange rate changes on cash and cash equivalents	(7.5)	(1.7)
Net increase (decrease) in cash and cash equivalents	275.5	(5.2)
Cash and cash equivalents - beginning of period	237.7	189.2
Cash and cash equivalents - end of period	$ 513.2	$ 184.0