CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net earnings	$ 201,392	$ 307,583	$ 275,749
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	115,903	102,412	102,949
(Gain) loss on sale of businesses	0	0	(1,735)
(Gain) loss on sale/disposal of long-lived assets	0	(11,054)	(1,120)
Deferred income taxes	(7,048)	40,787	8,562
Share-based compensation	14,437	13,669	14,094
Impairment of assets held for sale	33,043	0	0
Foreign Currency Transaction Gain (Loss), before Tax	9,351	0	0
Restructuring Costs, Noncash	15,628	0	0
Change in operating assets and liabilities, net of businesses acquired and divested:
Accounts receivable, net	71,147	(12,613)	(57,492)
Inventories, net	15,535	(3,485)	(41,197)
Progress Payments	(7,689)	(4,834)	(11,121)
Accounts payable and accrued expenses	(55,513)	(18,629)	48,930
Deferred revenue	(33,179)	36,134	23,082
Income taxes	15,171	(15,625)	(8,847)
Net pension and postretirement liabilities	(153,375)	(1,310)	(43,759)
Other current and long-term assets and liabilities	26,377	(11,631)	28,178
Net cash provided by operating activities	261,180	421,404	336,273
Cash flows from investing activities:
Proceeds from sales and disposals of long-lived assets	2,930	15,093	9,117
Additions to property, plant, and equipment	(47,499)	(69,752)	(53,417)
Payments to Acquire Businesses, Gross	(487,944)	(185,209)	(210,167)
Payments for (Proceeds from) Other Investing Activities	17	172	1,049
Net cash used for investing activities	(532,530)	(240,040)	(255,516)
Cash flows from financing activities:
Borrowings under revolving credit facilities	570,675	37,692	372,980
Payment of revolving credit facilities	(570,675)	(37,934)	(372,887)
Borrowings of debt	300,000	0	0
Principal payments on debt	0	0	(50,000)
Repurchases of company stock	(200,018)	(50,661)	(198,592)
Proceeds from share-based compensation plans	11,148	11,770	11,940
Dividends paid	(28,175)	(28,200)	(26,328)
Other	(874)	(812)	(752)
Net cash provided by (used for) financing activities	82,081	(68,145)	(263,639)
Effect of exchange-rate changes on cash	(3,516)	1,748	(16,172)
Net increase (decrease) in cash and cash equivalents	(192,785)	114,967	(199,054)
Cash and cash equivalents at beginning of period	391,033	276,066	475,120
Cash and cash equivalents at end of period	$ 198,248	$ 391,033	$ 276,066