Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities:
Net income	$ 192.3	$ 101.7
Reconciliation of net income to net cash provided by operating activities:
Depreciation	16.6	23.3
Amortization	22.3	37.2
Lease expense	5.6	6.9
Stock-based compensation	12.0	11.4
Deferred taxes	(0.1)	1.5
Other operating activities, net	3.7	2.3
Changes in assets and liabilities, excluding effects of acquisitions:
Receivables	(87.2)	100.2
Inventories	(52.8)	(28.9)
Contract assets	9.2	3.5
Prepaid expenses and other assets	2.1	20.2
Accounts payable	78.4	(0.3)
Accrued and other current liabilities	(40.7)	(126.1)
Contract liabilities	4.5	3.2
Other long-term liabilities	(2.4)	(6.5)
Net cash provided by operating activities	163.5	149.6
Investing activities:
Capital expenditures	(32.5)	(40.2)
Investment in securities	0.2	0.5
Other investing activities, net	0.3	8.0
Net cash used in investing activities	(32.0)	(31.7)
Financing activities:
Repurchases of common stock	(150.0)	(50.0)
Dividends paid	(41.5)	(38.9)
Proceeds from exercise of stock options	42.5	4.8
Withholding tax paid related to stock-based compensation	(16.2)	(9.9)
Other financing activities, net	(0.9)	(0.8)
Net cash used in financing activities	(166.1)	(94.8)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(0.7)	0.8
Change in cash and cash equivalents	(35.3)	23.9
Less: change in cash and cash equivalents of discontinued operations	(11.2)	2.5
Cash and cash equivalents at beginning of period	576.7	364.7
Cash and cash equivalents at end of period	$ 552.6	$ 386.1