Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 67,534	$ 181,386
Depreciation and amortization	249,543	237,225
Loss on debt retirement, net	10,557	10,562
Other operating activities and non-cash items	1,537	(707)
Changes in assets and liabilities	46,621	(61,504)
Net cash provided by operating activities	375,792	366,962
Cash flows from investing activities:
Purchases of property, plant, and equipment	(324,349)	(276,672)
Proceeds from the sale of property, plant and equipment	15,333	2,399
Financing lease payment from unconsolidated affiliate	7,741	10,087
Other investing activities	(5,654)	(10,781)
Net cash used in investing activities	(306,929)	(274,967)
Cash flows from financing activities:
Borrowings under revolving credit facilities	26,567	18,261
Payments under revolving credit facilities	(21,567)	(49,253)
Proceeds from issuance of long-term debt	348,236	611,007
Proceeds from issuance of long-term debt, related party	75,000	0
Payments of long-term debt, net of certain redemption premiums and discounts	(373,655)	(643,793)
Payments for debt issuance costs	(5,875)	(7,737)
Payments for repurchase of common stock	(41,543)	0
Proceeds from issuance of stock through share-based compensation plans	933	881
Payments of tax withholding for restricted shares	(793)	0
Net cash provided by (used in) financing activities	7,303	(70,634)
Effect of exchange rate fluctuations on cash and cash equivalents	2,226	731
Net increase in cash and cash equivalents	78,392	22,092
Cash and cash equivalents, beginning of period	404,998	395,406
Cash and cash equivalents, end of period	483,390	417,498
Cash paid during the period for:
Interest	43,515	56,813
Income taxes	15,245	4,971
Non cash investing and financing activities:
Common stock issuance for conversion of related party 6.25% convertible subordinated notes due December 2013	$ 100,000