Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities
Net Income	$ 63,025,000	$ 181,862,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and goodwill and other long-lived asset impairments	130,568,000	83,335,000
Amortization of lease right-of-use asset	70,214,000	61,797,000
Net pension benefit and special separation benefit expense	(27,669,000)	(33,061,000)
Gain on marketable equity securities and cost method investments, net	(493,000)	(54,341,000)
Gain on disposition of businesses, property, plant and equipment and investments, net	(5,918,000)	(28,871,000)
Provision for doubtful trade receivables	8,200,000	500,000
Provision for doubtful trade and other receivables	8,229,000	21,532,000
Stock-based compensation expense, net	4,758,000	4,752,000
Foreign exchange gain	(877,000)	(1,284,000)
Write-down of cost method investments	2,577,000	0
Equity in losses (earnings) of affiliates, net of distributions	2,784,000	(3,882,000)
(Benefit from) provision for deferred income taxes	(733,000)	26,310,000
Change in operating assets and liabilities:
Accounts receivable, net	139,306,000	(47,308,000)
Inventories	51,000	(11,969,000)
Accounts payable and accrued liabilities	(65,708,000)	(60,708,000)
Deferred revenue	(26,094,000)	24,920,000
Income taxes receivable	(190,000)	5,526,000
Other assets and other liabilities, net	(50,508,000)	(96,913,000)
Other	145,000	587,000
Net Cash Provided by Operating Activities	240,890,000	72,284,000
Cash Flows from Investing Activities
Proceeds from sales of marketable equity securities	93,775,000	17,586,000
Purchases of property, plant and equipment	(56,121,000)	(75,712,000)
Investments in certain businesses, net of cash acquired	(20,080,000)	(162,060,000)
Investments in equity affiliates, cost method and other investments	(8,298,000)	(25,836,000)
Net proceeds from disposition of businesses, property, plant and equipment, investments and other assets	1,570,000	53,785,000
Return of investment in equity affiliates	314,000	786,000
Purchases of marketable equity securities	0	(7,499,000)
Loan to related party	0	(3,500,000)
Other	1,562,000	0
Net Cash Provided by (Used in) Investing Activities	12,722,000	(202,450,000)
Cash Flows from Financing Activities
Common shares repurchased	(123,155,000)	0
Net borrowing under revolving credit facilities	75,905,000	5,000,000
Repayments of borrowings	(75,841,000)	(7,901,000)
Dividends paid	(22,870,000)	(22,167,000)
Net (payments) proceeds from vehicle floor plan payable	(16,300,000)	15,106,000
Proceeds from exercise of stock options	5,335,000	0
Deferred payments of acquisition	(5,010,000)	0
Proceeds from (repayments of) bank overdrafts	6,454,000	(2,611,000)
Issuance of borrowings	2,084,000	30,000,000
Issuance of noncontrolling interest	0	6,536,000
Other	(276,000)	1,672,000
Net Cash (Used in) Provided by Financing Activities	(153,674,000)	25,635,000
Effect Of Currency Exchange Rate Change	(2,729,000)	(2,177,000)
Net Increase (Decrease) in Cash and Cash Equivalents and Restricted Cash	97,209,000	(106,708,000)
Beginning Cash and Cash Equivalents and Restricted Cash	214,044,000	264,115,000
Ending Cash and Cash Equivalents and Restricted Cash	$ 311,253,000	$ 157,407,000