Supplemental Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2014

Supplemental Balance Sheet Information [Abstract]

Cash and Cash Equivalents

	September 30, 2014		December 31, 2013
Cash and Cash Equivalents.
Cash and money market funds	$	35.4	$	57.7
Commercial paper	176.9		111.8
Total	$	212.3	$	169.5

Trade Receivables

Trade Receivables - Net.
Billed trade receivables	$	132.2		$	120.2
Unbilled trade receivables	1.0			0.4
Trade receivables, gross	133.2			120.6
Allowance for doubtful receivables	(0.8		)	(0.8		)
Trade receivables - net	$	132.4		$	119.8

Inventories

Inventories.
Finished products	$	64.9	$	72.5
Work-in-process	70.5		75.9
Raw materials	56.0		47.2
Operating supplies and repair and maintenance parts	19.9		18.8
Total	$	211.3	$	214.4

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets.
Current derivative assets – Notes 8 and 9	$	101.6	$	2.0
Current deferred tax assets	47.8		36.7
Short-term restricted cash	0.3		0.3
Prepaid taxes	1.0		—
Other	5.7		5.2
Total	$	156.4	$	44.2

Property, Plant and Equipment - Net

Property, Plant and Equipment - Net.
Land and improvements	$	22.8		$	22.6
Buildings and leasehold improvements	62.4			53.0
Machinery and equipment	500.0			425.6
Construction in progress	18.1			66.0
Active property, plant and equipment, gross	603.3			567.2
Accumulated depreciation	(160.4		)	(137.9		)
Property, plant and equipment - net	$	442.9		$	429.3

Other Assets

Other Assets.
Derivative assets – Notes 8 and 9	$	0.2	$	79.8
Restricted cash	10.0		9.3
Deferred financing costs	6.3		8.9
Deferred compensation plan assets	7.2		6.5
Other	0.1		0.3
Total	$	23.8	$	104.8

Other Accrued Liabilities

Other Accrued Liabilities.
Current derivative liabilities – Notes 8 and 9	$	101.9	$	1.8
Uncleared cash disbursements	6.6		9.6
Accrued income taxes and taxes payable	6.3		4.3
Accrued annual VEBA contribution	—		16.0
Short-term environmental accrual – Note 7	3.3		2.8
Accrued interest	10.3		3.7
Short-term deferred revenue	0.2		—
Other	3.1		6.6
Total	$	131.7	$	44.8

Long-term Liabilities

Long-Term Liabilities.
Derivative liabilities – Notes 8 and 9	$	0.6	$	84.3
Income tax liabilities	5.0		5.0
Workers’ compensation accruals	23.0		23.3
Long-term environmental accrual – Note 7	16.9		20.0
Long-term asset retirement obligations	4.3		4.0
Deferred compensation liability	7.6		7.0
Long-term deferred revenue	0.6		—
Long-term capital leases	0.1		0.1
Other long-term liabilities	2.8		2.7
Total	$	60.9	$	146.4

Long-term Debt

Long-Term Debt — Note 3.
Senior notes	$	225.0	$	225.0
Cash convertible senior notes	—		163.5
Total	$	225.0	$	388.5