Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities:
Net income	$ 296.3	$ 495.1
Reconciliation of net income to net cash provided by operating activities:
Depreciation	46.1	48.0
Amortization	72.9	79.2
Lease expense	14.5	14.2
Stock-based compensation	24.9	15.8
Deferred taxes	(22.9)	0.4
Other operating activities, net	29.0	3.0
Changes in assets and liabilities, excluding effects of acquisitions:
Receivables	(196.5)	(372.2)
Inventories	59.5	(184.4)
Contract assets	8.9	(6.5)
Prepaid expenses and other assets	67.2	33.4
Accounts payable	46.5	121.2
Accrued and other current liabilities	(68.5)	(7.3)
Contract liabilities	7.5	10.4
Other long-term liabilities	(14.7)	(26.8)
Net cash provided by operating activities	370.7	223.5
Investing activities:
Capital expenditures	(70.1)	(82.7)
Proceeds from sale of discontinued operation, net of cash disposed	0.0	132.0
Acquisitions, net of cash acquired	0.0	(24.7)
Investment in securities	0.2	10.3
Other investing activities, net	14.0	2.0
Net cash (used in) provided by investing activities	(55.9)	36.9
Financing activities:
Repurchases of common stock	(250.0)	(175.0)
Dividends paid	(77.2)	(56.7)
Proceeds from exercise of stock options	11.8	16.0
Withholding tax paid related to stock-based compensation	(10.0)	(12.5)
Other financing activities, net	(1.7)	(1.7)
Net cash used in financing activities	(327.1)	(229.9)
Effect of foreign currency exchange rate changes on cash and cash equivalents	0.8	(1.7)
Change in cash and cash equivalents	(11.5)	28.8
Less: change in cash and cash equivalents of discontinued operations	(2.1)	(2.2)
Cash and cash equivalents at beginning of period	388.7	313.7
Cash and cash equivalents at end of period	$ 379.3	$ 344.7