Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities:
Net income (loss)	$ (367,598)	$ (24,827)
Depreciation, Depletion and Amortization	356,196
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization, including goodwill impairment	356,196	52,486
Impairment of Intangible Assets, Finite-lived	68,763	0
Deferred income tax provision (benefit)	(8,405)	(2,907)
Inventory Write-down	0	0
Net loss (gain) on sales of property and equipment and cost method investment	16	(11)
Noncash compensation	3,116	2,980
Other Noncash Income (Expense)	647	0
Increase (Decrease) in Accounts Receivable	(30,303)	(22,181)
Excluding the effects of acquisitions, increase (decrease) in cash from:
Inventory	8,384	(15,026)
Proceeds from Sale of Debt Securities, Available-for-sale	12,840
Other operating assets	(11,504)	1,010
Currency translation effect on working capital, excluding cash	(9,302)	371
Current liabilities	(102,784)	(15,058)
Other operating liabilities	(12,822)	(2,075)
Total adjustments to net income (loss)	335,448	43,951
Net Cash Provided by (Used in) Operating Activities	(32,150)	19,124
Cash Flows from Investing Activities:
Purchases of property and equipment	(27,229)	(29,964)
Distributions of capital from unconsolidated affiliates	405	0
Proceeds from Sale and Maturity of Other Investments		50
Dispositions of property and equipment	118
Net Cash Provided by (Used in) Investing Activities	(26,706)	(29,914)
Cash Flows from Financing Activities:
Other financing activities	(1,668)	(2,338)
Net Cash Provided by (Used in) Financing Activities	(1,668)	(2,338)
Effect of exchange rates on cash	(5,671)	632
Net Increase (Decrease) in Cash and Cash Equivalents	(66,195)	(12,496)
Cash and Cash Equivalents—Beginning of Period	373,655	354,259
Cash and Cash Equivalents—End of Period	$ 307,460	$ 341,763