Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2022	Jan. 03, 2021	Dec. 29, 2019
Operating Activities
Net income	$ 445.3	$ 401.9	$ 402.3
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	371.8	116.2	111.9
Stock-based compensation	33.9	30.0	30.7
Bridge financing and debt extinguishment expense	30.5	0.0	0.0
Changes in operating assets and liabilities, excluding the effect of businesses acquired:
Accounts receivable and unbilled receivables	(158.9)	47.8	(58.8)
Inventories	7.0	54.3	12.2
Prepaid expenses and other assets	11.8	(10.2)	(5.3)
Accounts payable	99.1	(46.3)	29.6
Accrued expenses and other liabilities	(5.7)	53.7	17.8
Deferred and income taxes payable, net	(21.4)	(28.8)	(53.8)
Other, net	11.2	0.3	(4.5)
Net cash provided by operating activities	824.6	618.9	482.1
Investing Activities
Purchases of property, plant and equipment	(101.6)	(71.4)	(88.4)
Purchase of businesses and other investments, net of cash acquired	(3,723.3)	(29.0)	(484.0)
Other, net	0.6	1.0	0.5
Net cash used in investing activities	(3,824.3)	(99.4)	(571.9)
Financing Activities
Net proceeds from credit facility	0.0	0.0	96.0
Proceeds from issuance of term loans and senior notes, net	3,975.9	2.7	150.0
Payments on other debt	(1,141.7)	(100.8)	(137.2)
Proceeds from stock options exercised	25.4	36.3	34.6
Payments for bridge financing and debt extinguishment	(30.5)	0.0	0.0
Other, net	(22.0)	0.0	(1.7)
Net cash provided by (used in) financing activities	2,807.1	(61.8)	141.7
Effect of exchange rate changes on cash and cash equivalents	(5.8)	15.9	5.1
Change in cash and cash equivalents	(198.4)	473.6	57.0
Cash and cash equivalents—beginning of period	673.1	199.5	142.5
Cash and cash equivalents—end of period	$ 474.7	$ 673.1	$ 199.5