CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net sales	$ 548,496	$ 504,554
Delivery revenues	25,924	33,608
Total revenues	574,420	538,162
Cost of goods sold	514,404	486,899
Delivery costs	25,924	33,608
Cost of revenues	540,328	520,507
Gross profit	34,092	17,655
Selling, administrative and general expenses	66,119	64,655
Gain on sale of property, plant & equipment and businesses, net	236,364	4,110
Restructuring charges	0	(1,509)
Other operating expense, net	(9,668)	(5,659)
Operating earnings (loss)	194,669	(50,058)
Other nonoperating income, net	2,825	2,373
Interest expense, net	120,089	52,752
Earnings (loss) from continuing operations before income taxes	77,405	(100,437)
Provision for (benefit from) income taxes	22,900	(38,818)
Earnings (loss) from continuing operations	54,505	(61,619)
Earnings (loss) on discontinued operations, net of tax	(510)	6,783
Net earnings (loss)	53,995	(54,836)
Other comprehensive income, net of tax
Reclassification adjustment for cash flow hedges	2,985	854
Adjustment for remeasurement of postretirement obligation	2,942	0
Amortization of pension and postretirement benefit plans actuarial loss and prior service cost	(1,222)	3,432
Other comprehensive income	4,705	4,286
Comprehensive income (loss)	58,700	(50,550)
Basic earnings (loss) per share
Continuing operations	$ 0.42	$ (0.47)
Discontinued operations	$ (0.01)	$ 0.05
Net earnings (loss)	$ 0.41	$ (0.42)
Diluted earnings (loss) per share
Continuing operations	$ 0.41	$ (0.47)
Discontinued operations	$ 0.00	$ 0.05
Net earnings (loss)	$ 0.41	$ (0.42)
Weighted-average common shares outstanding
Basic	130,810	130,186
Assuming dilution	132,314	130,186
Cash dividends per share of common stock	$ 0.05	$ 0.01
Depreciation, depletion, accretion and amortization	$ 69,378	$ 75,597
Effective tax rate from continuing operations	29.60%	38.60%