CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Net income	$ 6,105	$ 39,857	$ 87,187	$ 239,913
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,953	55,962	170,027	166,965
Equity-based compensation	738	3,833	9,463	11,355
Impairment charges	7,894		7,894
Deferred income taxes	34,633	7,118	54,464	29,081
(Gain) loss on disposal of property, plant and equipment	(152)	3,701	(565)	3,797
Changes in certain assets and liabilities:
Accounts receivable	2,690	33,533	15,604	(193,679)
Inventories	43,005	36,346	6,702	(44,787)
Other assets	(7,484)	1,632	(4,917)	7,329
Accounts payable	6,920	(4,375)	(19,015)	92,550
Income taxes receivable/payable	25,993	(5,911)	16,917	22,409
Accrued expenses and liabilities	(61,929)	50,767	(104,375)	57,464
Net cash provided by operating activities	117,366	222,463	239,386	392,397
Investing activities:
Purchases of property, plant and equipment	(58,342)	(38,126)	(158,686)	(91,795)
Proceeds from maturity of short-term commercial paper	9,998		84,830
Other investing activities	655	947	(20,379)	1,946
Net cash used in investing activities	(47,689)	(37,179)	(94,235)	(89,849)
Financing activities:
Issuance of current and long-term debt	760,000	10,851	1,049,969	15,977
Repayment of current and long-term debt	(946,858)	(105)	(1,252,202)	(7,921)
Debt issuance costs	(11,625)	(6,884)	(13,813)	(6,884)
Proceeds from exercise of stock options, including related tax effect	583	402	2,021	13,267
Contributions from noncontrolling investors, net	16,320	11,320	30,943	13,207
Dividends paid	(21,915)	(21,865)	(65,710)	(60,013)
Net cash used in financing activities	(203,495)	(6,281)	(248,792)	(32,367)
Increase (decrease) in cash and equivalents	(133,818)	179,003	(103,641)	270,181
Cash and equivalents at beginning of period	420,938	277,691	390,761	186,513
Cash and equivalents at end of period	287,120	456,694	287,120	456,694
Supplemental disclosure information:
Cash paid for interest	42,413	14,931	123,973	101,088
Cash paid for federal and state income taxes, net	$ 3,629	$ 12,403	$ 43,976	$ 74,378