CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ 86,680	$ 115,189
Adjustments to net income (loss):
Depreciation and amortization	501,085	566,458
Deferred income tax expense (benefit)	5,039	3,172
Losses (gains) on long-lived assets, net	2,725	15,041
Losses (gains) on investments, net		(5,062)
Share-based compensation	30,102	19,301
Foreign currency transaction losses (gains), net	(548)	1,044
Gain on merger transaction	(52,574)
Gains on acquisitions	(2,308)
Equity in (earnings) losses of unconsolidated affiliates, net of dividends	3,809	3,021
Other	4,815	3,355
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	449,062	(48,089)
Inventory	7,763	(6,623)
Other current assets	148,563	(31,780)
Other long-term assets	255,845	10,868
Trade accounts payable and accrued liabilities	(633,640)	57,418
Income taxes payable	(29,212)	(63,070)
Other long-term liabilities	(259,802)	205,794
Net cash provided by operating activities	517,404	846,037
Cash flows from investing activities:
Purchases of investments	(8)	(266)
Sales and maturities of investments	745	23,238
Cash paid for acquisition of businesses, net of cash acquired	(57,909)	(10,200)
Investment in unconsolidated affiliates	(445)	(1,612)
Proceeds from merger transaction	660,050
Capital expenditures	(566,672)	(862,680)
Proceeds from sales of assets and insurance claims	24,790	69,343
Other	1,809	(761)
Net cash provided by (used for) investing activities	62,360	(782,938)
Cash flows from financing activities:
Increase (decrease) in cash overdrafts	310	(3,383)
Proceeds from (payments for) issuance of common shares	1,198	29,047
Dividends to shareholders	(34,980)	(23,792)
Proceeds from short-term borrowings	60,169
Proceeds from (payment for) commercial paper, net	(208,467)	111,228
Proceeds from revolving credit facilities		15,000
Reduction in revolving credit facilities	(450,000)	(75,000)
Proceeds from term loan facility	300,000
Payments on term loan facility	(300,000)
Purchase of preferred stock		(70,875)
Reduction in short-term debt		(10,000)
Other	(7,426)	(7,303)
Net cash used for financing activities	(639,196)	(35,078)
Effect of exchange rate changes on cash and cash equivalents	(5,042)	(6,978)
Net increase (decrease) in cash and cash equivalents	(64,474)	21,043
Cash and cash equivalents, beginning of period	501,149	389,915
Cash and cash equivalents, end of period	$ 436,675	$ 410,958