Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net sales	$ 648,890	$ 657,457	$ 1,148,741	$ 1,113,773
Delivery revenues	45,246	44,514	81,277	75,398
Total revenues	694,136	701,971	1,230,018	1,189,171
Cost of goods sold	542,951	556,617	1,020,844	1,020,039
Delivery costs	45,246	44,514	81,277	75,398
Cost of revenues	588,197	601,131	1,102,121	1,095,437
Gross profit	105,939	100,840	127,897	93,734
Selling, administrative and general expenses	61,914	74,062	126,826	151,271
Gain on sale of property, plant & equipment and businesses, net	13,152	2,919	19,678	3,373
Recovery from legal settlement (Note 18)	0	0	0	25,546
Restructuring charges (Note 1)	(4,551)	(1,831)	(5,962)	(2,137)
Exchange offer costs (Note 1)	(32,060)	0	(42,125)	0
Other operating income (expense), net	(904)	(4,378)	720	(6,940)
Operating earnings (loss)	19,662	23,488	(26,618)	(37,695)
Other nonoperating income (expense), net	(709)	(20)	2,391	1,361
Interest expense, net	53,687	70,911	105,954	113,161
Loss from continuing operations before income taxes	(34,734)	(47,443)	(130,181)	(149,495)
Benefit from income taxes	(17,749)	(40,341)	(56,145)	(77,771)
Loss from continuing operations	(16,985)	(7,102)	(74,036)	(71,724)
Earnings (loss) on discontinued operations, net of tax	(1,298)	(1,037)	3,700	8,852
Net loss	(18,283)	(8,139)	(70,336)	(62,872)
Other comprehensive income, net of tax
Reclassification adjustment for cash flow hedges	955	4,003	1,893	5,453
Amortization of pension and postretirement benefit plans actuarial loss and prior service cost	3,084	1,941	6,168	4,158
Other comprehensive income	4,039	5,944	8,061	9,611
Comprehensive loss	(14,244)	(2,195)	(62,275)	(53,261)
Basic earnings (loss) per share
Continuing operations	$ (0.13)	$ (0.05)	$ (0.57)	$ (0.55)
Discontinued operations	$ (0.01)	$ (0.01)	$ 0.03	$ 0.06
Net loss per share	$ (0.14)	$ (0.06)	$ (0.54)	$ (0.49)
Diluted earnings (loss) per share
Continuing operations	$ (0.13)	$ (0.05)	$ (0.57)	$ (0.55)
Discontinued operations	$ (0.01)	$ (0.01)	$ 0.03	$ 0.06
Net loss per share	$ (0.14)	$ (0.06)	$ (0.54)	$ (0.49)
Weighted-average common shares outstanding
Basic	129,676	129,446	129,634	129,263
Assuming dilution	129,676	129,446	129,634	129,263
Dividends declared per share	$ 0.01	$ 0.25	$ 0.02	$ 0.50
Depreciation, depletion, accretion and amortization	$ 84,116	$ 92,137	$ 169,283	$ 182,723
Effective tax rate from continuing operations	51.10%	85.00%	43.10%	52.00%