Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net Income	$ (7,534)	$ 25,103
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	53,663	59,781
Deferred income tax provision	(19,943)	(389)
Net loss (gain) on sales of property and equipment	551	(9)
Noncash compensation	3,718	4,667
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable	59,997	35,572
Inventory	(17,515)	(23,669)
Other operating assets	(6,372)	45,547
Currency translation effect on working capital	1,472	10,248
Current liabilities	(30,636)	(93,565)
Other operating liabilities	21,604	(10,648)
Total adjustments to net income	66,539	27,535
Net Cash Provided by Operating Activities	59,005	52,638
Cash Flows from Investing Activities:
Purchases of property and equipment	(17,807)	(21,206)
Payments to Acquire Other Investments	(14,993)	(19,950)
Distributions of capital from unconsolidated affiliates	707	2,098
Dispositions of property and equipment	1,357	1,581
Net Cash Used in Investing Activities	(30,736)	(37,477)
Cash Flows from Financing Activities:
Cash Dividends	(14,739)	(26,476)
Proceeds from (Payments for) Other Financing Activities	(1,894)	(2,018)
Net Cash Provided by (Used in) Financing Activities	(16,633)	(28,494)
Effect of Exchange Rate on Cash and Cash Equivalents	687	(1,049)
Net Increase (Decrease) in Cash and Cash Equivalents	12,323	(14,382)
Cash and Cash Equivalents-Beginning of Period	450,193	385,235
Cash and Cash Equivalents-End of Period	$ 462,516	$ 370,853