Supplemental Balance Sheet Information

12 Months Ended

Dec. 31, 2012

Supplemental Balance Sheet Information [Abstract]

Supplemental Balance Sheet Information

Supplemental Balance Sheet Information

	December 31, 2012		December 31, 2011
Cash and Cash Equivalents.
Cash and money market funds	$	107.9	$	49.8
Commercial paper	165.5		—
Total	$	273.4	$	49.8

Trade Receivables.
Billed trade receivables	$	124.4		$	98.9
Unbilled trade receivables — Note 1	0.2			0.9
Trade receivables, gross	124.6			99.8
Allowance for doubtful receivables	(0.8		)	(0.9		)
Trade receivables, net	$	123.8		$	98.9

Inventories.
Finished products	$	59.9	$	75.9
Work-in-process	55.5		57.5
Raw materials	53.9		58.1
Operating supplies and repairs and maintenance parts	16.7		14.2
Total	$	186.0	$	205.7

Prepaid Expenses and Other Current Assets.
Current derivative assets — Notes 12 and 13	$	3.0	$	—
Current deferred tax assets	59.5		63.0
Current portion of option premiums paid - Notes 12 and 13	0.1		0.4
Short-term restricted cash	1.3		7.8
Prepaid taxes	2.1		3.8
Prepaid expenses	4.1		3.9
Total	$	70.1	$	78.9

Property, Plant, and Equipment - Net.
Land and improvements	$	22.6		$	22.6
Buildings and leasehold improvements	50.9			45.9
Machinery and equipment	400.4			356.7
Construction in progress	20.8			24.1
Active property, plant, and equipment, gross	494.7			449.3
Accumulated depreciation	(111.4		)	(86.9		)
Active property, plant, and equipment, net	383.3			362.4
Idled equipment	1.0			5.4
Property, plant, and equipment, net	$	384.3		$	367.8

Other Assets.
Derivative assets — Notes 12 and 13	$	55.5	$	46.2
Option premiums paid — Notes 12 and 13	—		0.1
Restricted cash	10.0		10.4
Long-term income tax receivable	2.9		2.8
Deferred financing costs	11.7		7.8
Available for sale securities	5.6		4.9
Other	0.3		0.1
Total	$	86.0	$	72.3

Other Accrued Liabilities.
Current derivative liabilities — Notes 12 and 13	$	3.1	$	14.8
Current portion of option premiums received — Notes 12 and 13	0.1		0.1
Accrued book overdraft (uncleared cash disbursement)	4.7		—
Accrued income taxes and taxes payable	3.1		2.6
Accrued annual VEBA contribution	20.0		—
Accrued freight	2.2		2.4
Short-term environmental accrual — Note 11	3.0		1.2
Accrued interest	3.7		2.3
Short-term deferred revenue — Note 1	6.7		13.5
Other	5.3		4.1
Total	$	51.9	$	41.0

Long-term Liabilities.
Derivative liabilities — Notes 12 and 13	$	63.5	$	55.5
Option premiums received — Notes 12 and 13	—		0.1
Income tax liabilities	15.1		13.4
Workers’ compensation accruals	24.0		20.8
Long-term environmental accrual — Note 11	18.7		20.8
Long-term asset retirement obligations	3.8		3.8
Long-term deferred revenue - Note 1	—		3.3
Deferred compensation liability	5.8		5.1
Other long-term liabilities	3.6		3.2
Total	$	134.5	$	126.0

Long-term Debt. — Note 3
Senior notes	$	225.0	$	—
Cash convertible senior notes	155.3		148.0
Other notes payable	—		3.4
Total	$	380.3	$	151.4