CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Current assets:
Cash and cash equivalents	$ 648,479	$ 397,101	$ 135,782
Trade accounts receivable, net	368,199	339,909	377,875
Inventories	687,923	554,148	654,483
Prepaid expenses and other current assets	43,499	42,565	47,482
Total current assets	1,748,100	1,333,723	1,215,622
Property, plant and equipment, net	1,066,750	1,064,708	1,081,916
Goodwill	393,451	389,922	391,789
Other intangible assets, net	96,666	96,442	95,113
Other assets, net	112,861	94,292	70,649
Assets, Total	3,417,828	2,979,087	2,855,089
Current liabilities:
Revolving loans and current portion of long-term debt	331,008	87,776	520,285
Trade accounts payable	261,561	319,339	272,581
Accrued payroll and related costs	62,168	58,429	54,209
Accrued liabilities	68,727	129,945	81,731
Total current liabilities	723,464	595,489	928,806
Long-term debt	1,580,787	1,288,483	922,717
Other liabilities	419,437	437,121	415,794
Stockholders' equity:
Common stock	876	875	873
Paid-in capital	199,068	196,626	186,114
Retained earnings	927,250	902,987	759,237
Accumulated other comprehensive loss	(99,888)	(115,282)	(47,204)
Treasury stock	(333,166)	(327,212)	(311,248)
Total stockholders' equity	694,140	657,994	587,772
Liabilities and Equity, Total	$ 3,417,828	$ 2,979,087	$ 2,855,089