Segment Information (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Operating income (loss)
Corporate SG & A	$ (82,372,000)	$ (80,032,000)
Profit sharing	(5,395,000)	(6,643,000)
Operating income	80,932,000	96,232,000
Assets
Cash and equivalents	342,919,000	477,861,000	395,156,000	375,917,000
Accounts receivable	760,654,000		664,208,000
Inventories	1,332,101,000		1,314,747,000
Deferred income taxes	17,871,000		17,964,000
Property, plant and equipment, net	2,197,503,000		2,226,134,000
Other	78,152,000		115,083,000
Total assets	5,913,857,000	5,956,574,000	5,933,006,000
Liabilities
Accounts payable	417,168,000		414,932,000
Income taxes payable	23,531,000		4,023,000
Accrued interest	21,911,000		31,363,000
Deferred income taxes	550,225,000		556,038,000
Liabilities	3,279,527,000	3,450,570,000
Operating segment | Other
Operating income (loss)
Corporate SG & A	(8,300,000)	(8,000,000)
Company-wide equity- based compensation	(4,600,000)	(3,200,000)
Profit sharing	(4,700,000)	(5,900,000)
Other, net	1,100,000	700,000
Operating income	(16,545,000)	(16,439,000)
Assets
Cash and equivalents	285,600,000	445,800,000
Accounts receivable	12,300,000	11,600,000
Inventories	13,500,000	13,200,000
Deferred income taxes	17,800,000	23,500,000
Property, plant and equipment, net	71,600,000	74,800,000
Debt issuance costs, net	24,400,000	31,300,000
Intra-company debt	153,800,000	156,000,000
Other	30,200,000	65,900,000
Total assets	609,206,000	822,064,000
Liabilities
Accounts payable	44,100,000	38,800,000
Income taxes payable	23,500,000	13,400,000
Accrued interest	21,700,000	19,100,000
Accrued profit sharing	4,800,000	5,900,000
Debt	2,031,400,000	2,247,100,000
Deferred income taxes	138,000,000	213,800,000
Other	26,800,000	18,500,000
Liabilities	$ 2,290,332,000	$ 2,556,590,000