Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Components Of Earnings (Loss) From Continuing Operations Before Income Taxes And Noncontrolling Interests

Year Ended December 31,	2011		2010		2009
United States	$	1,241,465	$	260,794	$	(353,463	)
Foreign		10,347		6,321		(60,515	)
	$	1,251,812	$	267,115	$	(413,978	)

Provision (Benefit) For Income Taxes

	Year Ended December 31,
	2011			2010			2009
Current:
Federal	$	329,076		$	(66,462	)	$	(258,683	)
State		1,685			(19,297	)		(22,274	)
Foreign		2,016			8,289			15,611
Total current		332,777			(77,470	)		(265,346	)
Deferred:
Federal		55,124			138,662			115,630
State		10,400			12,223			(10,354	)
Foreign		(7,473	)		(12,623	)		(16,730	)
Total deferred		58,051			138,262			88,546
Total provision (benefit) for income taxes	$	390,828		$	60,792		$	(176,800	)

Reconciliation Of The Federal Statutory Tax Rate To Total Provisions

	Year Ended December 31,
	2011			2010			2009
Taxes computed at statutory rate		35.00	%		35.00	%		35.00	%
State income taxes, net of federal income tax benefit		0.63			(1.72	)		5.12
Federal research credit		(0.28	)		(1.19	)		0.84
Domestic manufacturing deduction		(2.21	)		—			(0.13	)
Equity in losses of foreign joint venture		0.64			3.09			(5.93	)
Foreign rate differential		(0.92	)		(3.83	)		2.79
Noncontrolling interests		(2.32	)		(9.47	)		4.77
Other, net		0.68			0.88			0.25
Provision for income taxes		31.22	%		22.76	%		42.71	%

Deferred Tax Assets And Liabilities

	December 31,
	2011			2010
Deferred tax assets:
Accrued liabilities and reserves	$	115,752		$	115,095
Allowance for doubtful accounts		14,088			16,809
Inventory		142,236			140,676
Post-retirement benefits		8,260			17,889
Natural gas hedges		22,433			42,469
Net operating loss carryforward		25,739			50,529
Cumulative translation adjustments		2,254			506
Tax credit carryforwards		39,700			24,000
Total deferred tax assets		370,462			407,973
Deferred tax liabilities:
Holdbacks and amounts not due under contracts		(9,406	)		(13,007	)
Intangibles		(236,627	)		(250,247	)
Property, plant and equipment		(461,915	)		(406,889	)
Total deferred tax liabilities		(707,948	)		(670,143	)
Total net deferred tax liabilities	$	(337,486	)	$	(262,170	)

Reconciliation Of The Beginning And Ending Amounts Of Unrecognized Tax Benefits

	December 31,
	2011			2010			2009
Balance at beginning of year	$	92,752		$	108,587		$	87,734
Additions based on tax positions related to current year		6,733			1,983			2,422
Reductions based on tax positions related to current year		(3,160	)		(1,358	)		—
Additions based on tax positions related to prior years		937			5,705			858
Reductions based on tax positions related to prior years		(2,169	)		(4,046	)		(15,540	)
Additions due to settlements with taxing authorities		—			2,363			36,317
Reductions due to settlements with taxing authorities		(958	)		(3,246	)		(1,288	)
Reductions due to statute of limitations lapse		(13,238	)		(17,236	)		(1,916	)
Balance at end of year	$	80,897		$	92,752		$	108,587