Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities
Net Income	$ 211,704	$ 70,434	$ 353,327
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and goodwill and other long-lived asset impairment	235,169	261,138	162,225
Amortization of lease right-of-use asset	67,734	67,568	73,752
Net pension benefit and special separation benefit expense	(101,398)	(166,611)	(91,898)
(Gain) loss on marketable equity securities and cost method investments, net	(140,671)	134,011	(254,844)
Credit loss expense and provision for other receivables	6,045	2,958	6,824
Stock-based compensation expense, net of forfeitures	6,712	6,121	5,659
Accretion expense and change in fair value of contingent consideration liabilities	(6,593)	(5,105)	(4,207)
Foreign exchange loss	1,141	2,023	179
Gain on disposition of businesses, property, plant and equipment, investments and other assets, net	(11,811)	(24,220)	(8,554)
Equity in losses (earnings) of affiliates, net of distributions	20,751	13,503	4,917
Provision for (benefit from) deferred income taxes	43,765	(3,844)	65,046
Change in operating assets and liabilities:
Accounts receivable	8,231	45,518	(47,430)
Inventories	(62,873)	(64,324)	4,551
Accounts payable and accrued liabilities	24,695	(33,588)	32,397
Deferred revenue	38,497	18,219	7,224
Income taxes receivable/payable	6,152	6,766	(8,689)
Lease liabilities	(71,471)	(78,471)	(85,147)
Other assets and other liabilities, net	(12,166)	(21,275)	(14,144)
Other	(3,738)	4,783	1,238
Net Cash Provided by Operating Activities	259,875	235,604	202,426
Cash Flows from Investing Activities
Purchases of property, plant and equipment	(93,447)	(82,684)	(162,537)
Investments in certain businesses, net of cash acquired	(78,149)	(130,106)	(351,882)
Proceeds from sales of marketable equity securities	61,979	102,040	65,499
Loan to related party	(30,000)	0	0
Investments in equity affiliates, cost method and other investments	(14,050)	(38,894)	(8,531)
Purchases of marketable equity securities	(6,162)	(40,518)	(48,036)
Net proceeds from sales of businesses, property, plant and equipment and other assets	4,294	5,057	10,295
Other	2,560	1,039	557
Net Cash Used in Investing Activities	(152,975)	(184,066)	(494,635)
Cash Flows from Financing Activities
Issuance of borrowings	293,387	77,299	70,184
Common shares repurchased	(193,160)	(71,386)	(55,683)
Repayments of borrowings	(121,744)	(14,484)	(49,645)
Net borrowings under revolving credit facilities	(104,244)	3,000	134,696
Net proceeds from (repayments of) vehicle floor plan payable	73,732	26,230	(10,563)
Dividends paid	(30,953)	(30,712)	(30,136)
Deferred payments of acquisitions	(5,328)	(5,731)	(30,866)
Distributions paid to noncontrolling interests	(5,306)	(2,978)	(639)
Purchase of noncontrolling interest	(4,988)	(1,200)	(3,508)
Issuance of noncontrolling interest	3,931	4,918	3,777
Proceeds from sale of noncontrolling interest	0	3,200	0
Other	(5,162)	(6,263)	3,410
Net Cash (Used in) Provided by Financing Activities	(99,835)	(18,107)	31,027
Effect of Currency Exchange Rate Change	4,394	(1,842)	(3,029)
Net Increase (Decrease) in Cash and Cash Equivalents and Restricted Cash	11,459	31,589	(264,211)
Cash and Cash Equivalents and Restricted Cash at Beginning of Year	190,432	158,843	423,054
Cash and Cash Equivalents and Restricted Cash at End of Year	201,891	190,432	158,843
Cash paid during the year for:
Income taxes	39,000	48,000	39,000
Interest	$ 51,000	$ 37,000	$ 30,000