Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net sales	$ 714,947	$ 699,792	$ 1,828,720	$ 1,857,085
Delivery revenues	45,805	43,412	121,203	115,534
Total revenues	760,752	743,204	1,949,923	1,972,619
Cost of goods sold	599,167	573,045	1,619,206	1,607,109
Delivery costs	45,805	43,412	121,203	115,534
Cost of revenues	644,972	616,457	1,740,409	1,722,643
Gross profit	115,780	126,747	209,514	249,976
Selling, administrative and general expenses	67,859	77,560	221,267	247,431
Gain on sale of property, plant & equipment and businesses, net	41,457	476	44,831	50,210
Recovery (charge) from legal settlement (Note 19)	20,857	0	46,404	(40,000)
Other operating income (expense), net	(3,567)	769	(10,509)	2,117
Operating earnings	106,668	50,432	68,973	14,872
Other nonoperating income (expense), net	(3,745)	1,637	(2,384)	1,780
Interest expense, net	50,678	47,526	163,839	134,541
Earnings (loss) from continuing operations before income taxes	52,245	4,543	(97,250)	(117,889)
Provision (benefit) for income taxes	29,833	(6,048)	(47,938)	(61,491)
Earnings (loss) from continuing operations	22,412	10,591	(49,312)	(56,398)
Earnings (loss) on discontinued operations, net of tax	(2,453)	2,655	6,399	6,905
Net earnings (loss)	19,959	13,246	(42,913)	(49,493)
Other comprehensive income, net of tax
Fair value adjustments to cash flow hedges	0	(183)	0	(503)
Reclassification adjustment for cash flow hedges	900	2,849	6,353	8,347
Amortization of pension and postretirement plan actuarial loss and prior service cost	1,885	963	6,043	2,685
Other comprehensive income	2,785	3,629	12,396	10,529
Comprehensive income (loss)	22,744	16,875	(30,517)	(38,964)
Basic earnings (loss) per share
Continuing operations	$ 0.17	$ 0.08	$ (0.38)	$ (0.44)
Discontinued operations	$ (0.02)	$ 0.02	$ 0.05	$ 0.05
Net earnings (loss) per share	$ 0.15	$ 0.10	$ (0.33)	$ (0.39)
Diluted earnings (loss) per share
Continuing operations	$ 0.17	$ 0.08	$ (0.38)	$ (0.44)
Discontinued operations	$ (0.02)	$ 0.02	$ 0.05	$ 0.05
Net earnings (loss) per share	$ 0.15	$ 0.10	$ (0.33)	$ (0.39)
Weighted-average common shares outstanding
Basic	129,493	128,602	129,341	127,840
Assuming dilution	129,768	128,910	129,341	127,840
Cash dividends declared per share of common stock	$ 0.25	$ 0.25	$ 0.75	$ 0.75
Depreciation, depletion, accretion and amortization	$ 90,948	$ 97,697	$ 273,671	$ 289,174
Effective tax rate from continuing operations	57.10%	(133.10%)	49.30%	52.20%