Supplemental Balance Sheet Information

3 Months Ended

Mar. 31, 2012

Supplemental Balance Sheet Information [Abstract]

Supplemental Balance Sheet Information

Supplemental Balance Sheet Information

	March 31, 2012			December 31, 2011
Trade Receivables.
Billed trade receivables	$	128.8		$	98.9
Unbilled trade receivables – Note 1	2.2			0.9
Trade receivables, gross	131.0			99.8
Allowance for doubtful receivables	(0.9		)	(0.9		)
Trade receivables, net	$	130.1		$	98.9

Inventories.
Finished products	$	67.5	$	75.9
Work in process	69.6		57.5
Raw materials	46.2		58.1
Operating supplies and repairs and maintenance parts	14.9		14.2
Total	$	198.2	$	205.7

Prepaid Expenses and Other Current Assets.
Current derivative assets – Notes 10 and 11	$	1.4	$	—
Current deferred tax assets	63.0		63.0
Current portion of option premiums paid – Notes 10 and 11	0.4		0.4
Short-term restricted cash	0.9		7.8
Prepaid taxes	3.7		3.8
Prepaid expenses	5.9		3.9
Total	$	75.3	$	78.9

Property, Plant and Equipment - Net.
Land and improvements	$	22.6		$	22.6
Buildings and leasehold improvements	49.3			45.9
Machinery and equipment	362.7			356.7
Construction in progress	23.6			24.1
Active property, plant and equipment, gross	458.2			449.3
Accumulated depreciation	(92.8		)	(86.9		)
Active property, plant and equipment, net	365.4			362.4
Idled equipment	5.4			5.4
Total	$	370.8		$	367.8

Other Assets.
Derivative assets – Notes 10 and 11	$	37.4	$	46.2
Option premiums paid – Notes 10 and 11	0.1		0.1
Restricted cash	10.1		10.4
Long-term income tax receivable	2.9		2.8
Deferred financing costs	7.2		7.8
Available for sale securities	5.1		4.9
Other	0.2		0.1
Total	$	63.0	$	72.3

Other Accrued Liabilities.
Current derivative liabilities – Notes 10 and 11	$	12.8	$	14.8
Current portion of option premiums received – Notes 10 and 11	0.1		0.1
Taxes payable	5.6		2.6
Accrued freight	2.5		2.4
Short-term environmental accrual – Note 9	1.3		1.2
Accrued interest	4.4		2.3
Short-term deferred revenue – Note 1	11.3		13.5
Other	4.6		4.1
Total	$	42.6	$	41.0

Long-term Liabilities.
Derivative liabilities – Notes 10 and 11	$	46.7	$	55.5
Option premiums received – Notes 10 and 11	0.1		0.1
Income tax liabilities	13.9		13.4
Workers’ compensation accruals	20.5		20.8
Long-term environmental accrual – Note 9	20.4		20.8
Long-term asset retirement obligations	3.9		3.8
Long-term deferred revenue – Note 1	2.2		3.3
Deferred compensation liability	5.5		5.1
Other long-term liabilities	2.9		3.2
Total	$	116.1	$	126.0