Income Taxes (Schedule Of Significant Differences Between U.S. Federal Statutory Rate And Effective Income Tax Rate) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Federal statutory rate	35.00%		35.00%		35.00%
State taxes, net of federal tax benefit	0.70%		1.30%		1.10%
Change in valuation allowance	(0.30%)		(0.40%)		(0.90%)
Impact of foreign earnings, net	(9.80%)	[1]	(9.40%)	[1],[2]	(22.60%)	[1]
Effect of net income attributable to noncontrolling interests					(0.80%)
Effect of completing domestic audits					5.70%	[3]
Depletion	(0.80%)		(1.00%)		(1.70%)
Revaluation of unrecognized tax benefits/reserve requirements	(0.10%)		0.10%		(19.70%)	[3]
Manufacturer tax deduction	(1.00%)		(1.60%)			[4]
Other items, net	(0.10%)		(0.40%)		(0.50%)
Effective income tax rate	23.60%		23.60%		(4.40%)
Proceeds from various foreign subsidiaries and joint ventures related to repatriation of high taxed earnings	$ 33,800,000		$ 68,700,000		$ 6,100,000
Foreign tax credits	5,400,000		2,700,000		200,000
Income tax expense (benefit)	130,014,000		92,719,000		(7,028,000)
Internal Revenue Service (IRS) [Member]
Tax Years Audited					2005 through 2007
Income tax expense (benefit)					$ 19,500,000

[1] In prior years, we designated the undistributed earnings of substantially all of our foreign subsidiaries as permanently reinvested. The benefit of the lower tax rates in the jurisdictions for which we made this designation have been reflected in our effective income tax rate. During 2011, 2010 and 2009, we received distributions of $33.8 million, $68.7 million and $6.1 million, respectively, from various foreign subsidiaries and joint ventures and realized an expense, net of foreign tax credits, of $5.4 million, $2.7 million and $0.2 million, respectively, related to the repatriation of these high taxed earnings. We have asserted for all periods being reported, permanent reinvestment of our share of the income of JBC, a Free Zones company under the laws of the Hashemite Kingdom of Jordan. The applicable provisions of the Jordanian law, and applicable regulations thereunder, do not have a termination provision and the exemption is permanent. As a Free Zones company, JBC is not subject to income taxes on the profits of products exported from Jordan and currently all of the profits are from exports.

[2] The percentage impact of foreign earnings decreased significantly due to higher domestic earnings.

[3] During 2009, the completion of IRS tax audits from 2005 through 2007 tax years provided a net benefit of $19.5 million.

[4] In 2009, limitations imposed by our domestic taxable income precluded us from claiming the manufacturer tax deduction.