Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities:
Net income	$ 904.7	$ 296.3
Reconciliation of net income to net cash provided by operating activities:
Depreciation	34.2	46.1
Amortization	47.8	72.9
Lease expense	12.0	14.5
Stock-based compensation	14.8	21.0
Deferred taxes	(4.1)	(22.9)
(Gain) loss on sale of discontinued operations	(454.4)	50.8
Other operating activities, net	7.1	29.0
Changes in assets and liabilities, excluding effects of acquisitions:
Receivables	(263.1)	(196.5)
Inventories	(69.3)	59.5
Contract assets	10.3	8.9
Prepaid expenses and other assets	2.6	22.1
Accounts payable	104.4	46.5
Accrued and other current liabilities	6.2	(69.9)
Contract liabilities	10.5	7.5
Other long-term liabilities	(16.8)	(15.1)
Net cash provided by operating activities	346.9	370.7
Investing activities:
Proceeds from sale of discontinued operations, net of cash disposed	1,995.3	0.0
Acquisitions, net of cash acquired	(412.8)	0.0
Capital expenditures	(57.4)	(70.1)
Investment in securities	0.4	0.2
Other investing activities, net	1.1	14.0
Net cash provided by (used in) investing activities	1,526.6	(55.9)
Financing activities:
Borrowings from revolving credit facility	22.0	0.0
Repayments of revolving credit facility	(22.0)	0.0
Repurchases of common stock	(700.0)	(250.0)
Dividends paid	(81.7)	(77.2)
Proceeds from exercise of stock options	61.2	11.8
Withholding tax paid related to stock-based compensation	(17.5)	(10.0)
Other financing activities, net	(3.9)	(1.7)
Net cash used in financing activities	(741.9)	(327.1)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(0.8)	0.8
Change in cash and cash equivalents	1,130.8	(11.5)
Less: change in cash and cash equivalents of discontinued operations	(28.8)	4.1
Cash and cash equivalents at beginning of period	576.7	364.8
Cash and cash equivalents at end of period	$ 1,736.3	$ 349.2