Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Operations [Abstract]
Sales	$ 1,168,039	$ 926,905	$ 2,159,852	$ 1,785,187
Cost of sales	995,341	809,485	1,840,188	1,538,295
Gross margin	172,698	117,420	319,664	246,892
Selling, general and administrative expenses	122,500	110,115	237,312	218,203
Operating income	50,198	7,305	82,352	28,689
Other income (expense):
Interest expense	(34,524)	(34,350)	(68,024)	(69,689)
Write off of debt issuance costs	(9,450)		(9,450)
Change in fair value of derivative instruments	1,624	(1,558)	3,492	(5,621)
Other, net	(695)	1,273	(3,035)	913
Total other income (expense)	(43,045)	(34,635)	(77,017)	(74,397)
Income (Loss) before income taxes	7,153	(27,330)	5,335	(45,708)
Income tax expense (benefit)	2,475	(11,407)	1,785	(17,885)
Net income (loss)	$ 4,678	$ (15,923)	$ 3,550	$ (27,823)
Effective tax rate	34.60%	41.70%	33.50%	39.10%
Basic earnings (loss) per common share	$ 0.03	$ (0.09)	$ 0.02	$ (0.16)
Diluted earnings (loss) per common share	$ 0.03	$ (0.09)	$ 0.02	$ (0.16)
Weighted-average common shares, basic	168,836	168,735	168,831	168,745
Weighted-average common shares, diluted	169,210	168,735	169,204	168,745