CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ (397,570)	$ 123,545
Adjustments to net income (loss):
Depreciation and amortization	216,669	281,019
Deferred income tax expense (benefit)	(67,289)	(68,623)
Impairments and other charges	2,735
Losses (gains) on debt buyback	6,027
Losses (gains) on long-lived assets, net	2,563	732
Impairments on equity method holdings	177,242
Losses (gains) on merger and acquisitions		(52,574)
Share-based compensation	7,374	13,691
Foreign currency transaction losses (gains), net	4,213	(2,345)
Equity in (earnings) losses of unconsolidated affiliates, net of dividends	167,151	(5,737)
Other	1,258	3,988
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	166,074	244,544
Inventory	2,057	511
Other current assets	(18,651)	13,145
Other long-term assets	13,214	(1,665)
Trade accounts payable and accrued liabilities	(120,757)	(275,313)
Income taxes payable	966	24,927
Other long-term liabilities	10,284	7,325
Net cash provided by operating activities	161,506	307,170
Cash flows from investing activities:
Sales and maturities of investments	41	623
Investment in unconsolidated affiliates		(445)
Capital expenditures	(129,875)	(364,234)
Proceeds from sales of assets and insurance claims	5,448	8,997
Proceeds from merger transaction		693,450
Other	(4,439)	1,710
Net cash (used for) provided by investing activities	(128,825)	340,101
Cash flows from financing activities:
Increase (decrease) in cash overdrafts	1,642	(1,017)
Proceeds from revolving credit facilities	150,000
Reduction in revolving credit facilities	(70,000)	(250,000)
Proceeds from (payments for) issuance of common shares		182
Repurchase of common shares	(1,687)
Reduction in long-term debt	148,045
Dividends to shareholders	(16,922)	(17,470)
Proceeds from (payment for) commercial paper, net	1,325	(282,615)
Proceeds from term Loan		300,000
Payments on term loan		(300,000)
Other	(3,818)	(4,549)
Net cash (used for) provided by financing activities	(87,505)	(555,469)
Effect of exchange rate changes on cash and cash equivalents	968	(6,950)
Net increase (decrease) in cash and cash equivalents	(53,856)	84,852
Cash and cash equivalents, beginning of period	254,530	501,149
Cash and cash equivalents, end of period	$ 200,674	$ 586,001