Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Income	$ 125.7	$ 121.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	45.6	41.4
Impairment charges	28.3	0.0
Loss on sale of assets	0.2	0.6
Gain on divestitures	(4.0)	0.0
Deferred income tax provision	2.8	1.8
Stock-based compensation expense	11.0	7.1
Pension and other postretirement expense	0.4	1.0
Pension and other postretirement benefit contributions and payments	(4.8)	(5.2)
Changes in operating assets and liabilities:
Accounts receivable	(50.3)	(118.2)
Unbilled receivables	(11.1)	16.1
Inventories	6.1	(70.2)
Accounts payable, trade	(9.4)	7.7
Other accrued expenses	(44.8)	(19.5)
Income taxes	(15.0)	6.3
Other, net	(2.1)	8.0
Net Cash Provided by (Used in) Operating Activities	78.6	(1.2)
Investing Activities
Capital expenditures	(41.7)	(34.3)
Acquisitions, net of cash acquired	(29.2)	0.0
Proceeds from divestitures, net of cash divested	5.7	0.0
Investments in short-term marketable securities, net	0.8	(0.8)
Other, net	(0.1)	0.1
Net Cash Used in Investing Activities	(64.5)	(35.0)
Financing Activities
Cash dividends paid to shareholders	(23.6)	(23.5)
Purchase of treasury shares	(54.0)	(100.0)
Proceeds from exercise of stock options	12.7	1.4
Payments related to tax withholding for stock-based compensation	(13.8)	(7.5)
Borrowings on accounts receivable facility	29.0	100.0
Payments on accounts receivable facility	(14.0)	(100.0)
Proceeds from long-term debt	137.0	524.3
Payments on long-term debt	(82.7)	(182.7)
Deferred financing costs	0.0	(2.6)
Short-term debt activity, net	(8.1)	(11.1)
Other	0.0	6.4
Net Cash (Used in) Provided by Financing Activities	(17.5)	204.7
Effect of exchange rate changes on cash	1.8	(1.2)
(Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(1.6)	167.3
Cash, cash equivalents and restricted cash at beginning of year	340.7	257.9
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 339.1	$ 425.2