Supplemental Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2011

Supplemental Balance Sheet Information [Abstract]

Trade Receivables

	June 30,			December 31,
	2011			2010
Trade Receivables.
Billed trade receivables	$	114.4		$	82.5
Unbilled trade receivables – Note 1		5.3			1.1
Trade receivables, gross		119.7			83.6
Allowance for doubtful receivables		(0.6	)		(0.6	)
Trade receivables, net	$	119.1		$	83.0

Inventories

Inventories.
Finished products	$	55.7	$	53.8
Work in process		64.1		49.6
Raw materials		44.8		50.9
Operating supplies and repairs and maintenance parts		13.6		13.2
Total	$	178.2	$	167.5

Prepaid expenses and Other Current Assets

Prepaid Expenses and Other Current Assets.
Current derivative assets – Note 11	$	14.2	$	22.1
Current deferred tax assets		46.7		46.8
Current portion of option premiums paid – Note 11		3.0		5.6
Short-term restricted cash		7.9		0.9
Prepaid taxes		2.1		1.3
Prepaid expenses		4.9		3.4
Total	$	78.8	$	80.1

Property, Plant and Equipment

Property, Plant and Equipment.
Land and improvements	$	23.3		$	23.3
Buildings		45.8			43.5
Machinery and equipment		346.5			338.0
Construction in progress		14.8			7.7
Active property, plant and equipment, gross		430.4			412.5
Accumulated depreciation		(75.4	)		(63.9	)
Active property, plant and equipment, net		355.0			348.6
Idled equipment		5.4			5.5
Property, plant, and equipment, net	$	360.4		$	354.1

Other Assets

Other Assets.
Derivative assets – Note 11	$	56.2	$	50.8
Option premiums paid – Note 11		0.4		0.6
Restricted cash		9.4		16.3
Long-term income tax receivable		3.0		2.9
Deferred financing costs		6.7		7.7
Available for sale securities		5.0		4.6
Other		0.2		0.1
Total	$	80.9	$	83.0

Other Accrued Liabilities

Other Accrued Liabilities.
Current derivative liabilities – Note 11	$	6.3	$	8.9
Current portion of option premiums received – Note 11		3.6		7.0
Current portion of income tax liabilities		1.2		1.1
Accrued income taxes and taxes payable		3.6		1.8
Accrued annual VEBA contribution		—		2.1
Accrued freight		1.7		1.9
Short-term environmental accrual – Note 10		0.9		1.1
Accrued interest		2.1		2.1
Short-term deferred revenue – Note 1		10.6		10.8
Other		4.4		5.2
Total	$	34.4	$	42.0

Long-term Liabilities

Long-term Liabilities.
Derivative liabilities – Note 11	$	69.4	$	62.2
Option premiums received – Note 11		0.2		0.3
Income tax liabilities		13.8		12.9
Workers’ compensation accruals		16.9		15.9
Long-term environmental accrual – Note 10		20.9		19.1
Long-term asset retirement obligations		3.8		3.8
Long-term deferred revenue – Note 1		9.0		13.2
Deferred compensation liability		5.1		4.9
Other long-term liabilities		2.7		2.4
Total	$	141.8	$	134.7