Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows — Operating activities:
Net earnings, including noncontrolling interests	$ 261,780	$ 125,050	$ 4,328
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	90,619	95,820	101,438
Amortization of intangible and other assets	13,862	16,653	17,016
Loss (gain) on disposition of businesses	0	7,727	(141,317)
Stock-based compensation	23,882	19,912	22,820
Provision for U.S. Tax Cuts and Jobs Act of 2017	0	(5,654)	115,320
Foreign currency, asset impairment and other non-cash adjustments	(11,224)	36,052	33,087
Change in assets and liabilities:
Accounts receivable, net	2,883	(25,448)	60,216
Inventories, net	(31,058)	(29,314)	48,642
Contract assets, net	(45,939)	(23,693)	0
Prepaid expenses and other assets, net	13,289	(7,869)	32,935
Contract liabilities	14,390	33,710	0
Accounts payable	22,870	(4,823)	12,403
Accrued liabilities and income taxes payable	4,184	(18,248)	(3,383)
Retirement obligations and other	(39,881)	(44,314)	(43,431)
Net deferred taxes	(6,916)	15,270	50,992
Net cash flows provided (used) by operating activities	312,741	190,831	311,066
Cash flows — Investing activities:
Capital expenditures	(66,170)	(83,993)	(61,602)
Proceeds from disposal of assets	42,333	6,190	5,435
(Payments for) proceeds from disposition of businesses	0	(3,663)	232,767
Net cash flows provided (used) by investing activities	(23,837)	(81,466)	176,600
Cash flows — Financing activities:
Payments on long-term debt	(105,000)	(60,000)	(60,000)
Payments of deferred loan costs	0	0	(1,503)
Proceeds from short-term financing	75,000	0	0
Payments on short-term financing	(75,000)	0	0
Proceeds under other financing arrangements	4,639	3,377	7,359
Payments under other financing arrangements	(9,281)	(9,853)	(19,030)
Payments related to tax withholding for stock-based compensation	(3,900)	(3,061)	(6,238)
Repurchases of common shares	(15,000)	0	0
Payments of dividends	(99,557)	(99,416)	(99,233)
Other	(1,555)	(4,331)	(6,708)
Net cash flows provided (used) by financing activities	(229,654)	(173,284)	(185,353)
Effect of exchange rate changes on cash	(7,953)	(19,843)	33,970
Net change in cash and cash equivalents	51,297	(83,762)	336,283
Cash and cash equivalents at beginning of year	619,683	703,445	367,162
Cash and cash equivalents at end of year	670,980	619,683	703,445
Income taxes paid (net of refunds)	66,372	87,009	59,409
Interest paid	$ 53,607	$ 54,576	$ 56,808