Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities
Net Income	$ 70,434	$ 353,327	$ 299,968
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and goodwill and other long-lived asset impairment	261,138	162,225	161,207
Amortization of lease right-of-use asset	67,568	73,752	89,956
Net pension benefit and special separation benefit expense	(166,611)	(91,898)	(41,573)
Loss (gain) on marketable equity securities and cost method investments, net	134,011	(254,844)	(57,669)
Credit loss expense and provision for other receivables	2,958	6,824	10,667
Stock-based compensation expense, net of forfeitures	6,121	5,659	6,348
Contingent consideration fair value measurements and accretion	(5,105)	(4,207)	2,895
Foreign exchange loss	2,023	179	2,153
Gain on disposition and write-downs of businesses, property, plant and equipment, investments and other assets, net	(24,220)	(8,554)	(214,926)
Equity in earnings of affiliates, net of distributions	13,503	4,917	6,592
(Benefit from) provision for deferred income taxes	(3,844)	65,046	14,377
Change in operating assets and liabilities:
Accounts receivable	41,635	(59,292)	61,328
Inventories	(64,324)	4,551	3,786
Accounts payable and accrued liabilities	(44,870)	32,397	(32,714)
Deferred revenue	33,384	19,086	(25,728)
Income taxes receivable/payable	6,766	(8,689)	3,310
Lease liabilities	(78,471)	(85,147)	(91,478)
Other assets and other liabilities, net	(21,275)	(14,144)	11,735
Other	4,783	1,238	429
Net Cash Provided by Operating Activities	235,604	202,426	210,663
Cash Flows from Investing Activities
Investments in certain businesses, net of cash acquired	(130,106)	(351,882)	(20,080)
Proceeds from sales of marketable equity securities	102,040	65,499	93,775
Purchases of property, plant and equipment	(82,684)	(162,537)	(69,591)
Purchases of marketable equity securities	(40,518)	(48,036)	(20,004)
Investments in equity affiliates, cost method and other investments	(38,894)	(8,531)	(12,367)
Net proceeds from sales of businesses, property, plant and equipment and other assets	5,057	10,295	225,570
Other	1,039	557	2,068
Net Cash (Used in) Provided by Investing Activities	(184,066)	(494,635)	199,371
Cash Flows from Financing Activities
Issuance of borrowings	77,299	70,184	2,084
Common shares repurchased	(71,386)	(55,683)	(161,829)
Dividends paid	(30,712)	(30,136)	(29,970)
Net proceeds from (repayments of) vehicle floor plan payable	26,230	(10,563)	(14,160)
Repayments of borrowings	(14,484)	(49,645)	(83,360)
Deferred payments of acquisitions	(5,731)	(30,866)	(19,348)
(Repayments of) proceeds from bank overdrafts	(5,060)	3,410	1,636
Issuance of noncontrolling interest	4,918	3,777	0
Proceeds from sale of noncontrolling interest	3,200	0	0
Net borrowings under revolving credit facilities	3,000	134,696	76,241
Proceeds from exercise of stock options	1,817	0	25,129
Purchase of noncontrolling interest	(1,200)	(3,508)	0
Other	(5,998)	(639)	(425)
Net Cash (Used in) Provided by Financing Activities	(18,107)	31,027	(204,002)
Effect of Currency Exchange Rate Change	(1,842)	(3,029)	2,978
Net Increase (Decrease) in Cash and Cash Equivalents and Restricted Cash	31,589	(264,211)	209,010
Cash and Cash Equivalents and Restricted Cash at Beginning of Year	158,843	423,054	214,044
Cash and Cash Equivalents and Restricted Cash at End of Year	190,432	158,843	423,054
Cash paid during the year for:
Income taxes	48,000	39,000	91,000
Interest	$ 37,000	$ 30,000	$ 31,000