Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net income	$ 924.0	$ 421.7	$ 320.1
Reconciliation of net income to cash flows provided by operating activities:
Depreciation	96.7	92.1	97.4
Amortization	154.6	134.1	126.8
Lease expense	27.9	27.1	28.1
Stock-based compensation	31.2	19.4	29.9
Loss on extinguishment of debt	0.0	0.0	8.8
Deferred taxes	(33.3)	(5.4)	(27.0)
Other operating activities, net	39.2	22.7	21.9
Changes in assets and liabilities, excluding effects of acquisitions:
Receivables	(25.9)	(206.9)	78.9
Inventories	(165.2)	(136.8)	16.4
Contract assets	(18.9)	13.1	13.3
Prepaid expenses and other assets	21.6	(34.6)	(6.6)
Accounts payable	(60.5)	85.4	(15.2)
Accrued and other current liabilities	20.0	4.6	(5.3)
Contract liabilities	27.4	13.1	20.5
Other long-term liabilities	(37.9)	(27.9)	(11.3)
Net cash provided by operating activities	1,000.9	421.7	696.7
Investing activities:
Acquisitions, net of cash acquired	(24.7)	(1,571.3)	(35.4)
Proceed from sale of discontinued operation, net of cash disposed	132.0	247.7	0.0
Capital expenditures	(183.5)	(134.8)	(95.5)
Investment in securities	10.3
Investment in securities		(30.2)	0.0
Other investing activities, net	4.8	2.2	8.3
Net cash used in investing activities	(61.1)	(1,486.4)	(122.6)
Financing activities:
Proceeds from notes	0.0	842.6	740.7
Repayments of notes	(350.0)	0.0	(258.5)
Borrowings from revolving credit facility	0.0	650.0	500.0
Repayments of revolving credit facility	0.0	(650.0)	(500.0)
Financing costs	0.0	(1.7)	(24.2)
Repurchases of common stock	(400.0)	(315.6)	(382.4)
Dividends paid	(134.4)	(112.5)	(112.4)
Proceeds from exercise of stock options	40.4	85.9	21.3
Withholding tax paid related to stock-based compensation	(14.7)	(8.5)	(8.3)
Other financing activities, net	(3.3)	(2.1)	(0.9)
Net cash (used in) provided by financing activities	(862.0)	488.1	(24.7)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(2.2)	(1.2)	1.6
Change in cash and cash equivalents	75.6	(577.8)	551.0
Less: change in cash and cash equivalents of discontinued operations	0.0	(5.1)	(3.6)
Cash and cash equivalents
Cash and cash equivalents at beginning of period	324.4	897.1	342.5
Cash and cash equivalents at end of period	$ 400.0	$ 324.4	$ 897.1