Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities:
Net income	$ 749.8	$ 293.6
Reconciliation of net income to net cash provided by operating activities:
Depreciation	72.7	67.9
Amortization	117.5	96.8
Lease expense	21.0	20.3
Stock-based compensation	21.4	14.0
Deferred taxes	(0.8)	(2.0)
Other operating activities, net	37.5	16.9
Changes in assets and liabilities, excluding effects of acquisitions:
Receivables	(291.3)	(268.7)
Inventories	(223.4)	(72.4)
Contract assets	(12.3)	11.7
Prepaid expenses and other assets	32.0	(9.3)
Accounts payable	71.1	134.9
Accrued and other current liabilities	7.9	(4.4)
Contract liabilities	22.5	11.3
Other long-term liabilities	(37.0)	(26.7)
Net cash provided by operating activities	588.6	283.9
Investing activities:
Proceeds from sale of discontinued operation, net of cash disposed	132.0	247.7
Capital expenditures	(130.5)	(88.9)
Acquisitions, net of cash acquired	(24.7)	(1,573.9)
Investment in securities	10.3
Investment in securities		(10.2)
Other investing activities, net	2.2	2.1
Net cash used in investing activities	(10.7)	(1,423.2)
Financing activities:
Proceeds from notes	0.0	842.6
Borrowings from revolving credit facility	0.0	650.0
Repayments of revolving credit facility	0.0	(650.0)
Financing costs	0.0	(1.7)
Repurchases of common stock	(201.1)	(290.6)
Dividends paid	(95.6)	(84.2)
Proceeds from exercise of stock options	39.3	77.4
Withholding tax paid related to stock-based compensation	(13.3)	(8.4)
Other financing activities, net	(2.5)	(1.2)
Net cash (used in) provided by financing activities	(273.2)	533.9
Effect of foreign currency exchange rate changes on cash and cash equivalents	(3.7)	(1.2)
Change in cash and cash equivalents	301.0	(606.6)
Less: change in cash and cash equivalents of discontinued operations	0.0	(5.1)
Cash and cash equivalents at beginning of period	324.4	897.1
Cash and cash equivalents at end of period	$ 625.4	$ 295.6