CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ (148,067)	$ (397,570)
Adjustments to net income (loss):
Depreciation and amortization	204,364	216,669
Deferred income tax expense (benefit)	(48,469)	(67,289)
Impairments and other charges		2,735
Deferred financing costs amortization	1,728	1,118
Discount amortization on long-term debt	4,505	568
Losses (gains) on debt buyback	8,596	(6,027)
Losses (gains) on long-lived assets, net	2,875	2,563
Impairments on equity method holdings		177,242
Share-based compensation	10,280	7,374
Foreign currency transaction losses (gains), net	877	4,213
Equity in (earnings) losses of unconsolidated affiliates, net of dividends	(2)	167,151
Other	(751)	(428)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	(19,198)	166,074
Inventory	(5,301)	2,057
Other current assets	(10,725)	(18,651)
Other long-term assets	15,294	13,214
Trade accounts payable and accrued liabilities	(38,659)	(120,757)
Income taxes payable	17,929	966
Other long-term liabilities	(53,267)	10,284
Net cash (used for) provided by operating activities	(57,991)	161,506
Cash flows from investing activities:
Purchases of investments	(4)
Sales and maturities of investments	91	41
Capital expenditures	(183,427)	(129,875)
Proceeds from sales of assets and insurance claims	3,253	5,448
Other	(106)	(4,439)
Net cash (used for) provided by investing activities	(180,193)	(128,825)
Cash flows from financing activities:
Increase (decrease) in cash overdrafts	(469)	1,642
Proceeds from Issuance of Long-term Debt	411,200
Debt issuance costs	(10,439)
Proceeds from revolving credit facilities		150,000
Reduction in revolving credit facilities		(70,000)
Proceeds from (payments for) issuance of common shares	8,300
Repurchase of common shares		(1,687)
Reduction in long term debt	(170,491)	(148,045)
Dividends to shareholders	(17,040)	(16,922)
Proceeds from (payment for) commercial paper, net		1,325
Cash proceeds from equity component of exchangeable debt	159,952
Payments on term loan	(162,500)
Proceeds from (payments for) short-term borrowings	16	(628)
Purchase of capped call hedge transactions	(40,250)
Other	(5,341)	(3,190)
Net cash (used for) provided by financing activities	172,938	(87,505)
Payments for hedge transactions	40,250
Effect of exchange rate changes on cash and cash equivalents	1,841	968
Net increase (decrease) in cash and cash equivalents	(63,405)	(53,856)
Cash and cash equivalents, beginning of period	264,093	254,530
Cash and cash equivalents, end of period	$ 200,688	$ 200,674