Supplemental Balance Sheet Information Supplemental Balance Sheet Information (Tables)

3 Months Ended

Mar. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Supplemental Balance Sheet Disclosures

	March 31, 2016			December 31, 2015
	(In millions of dollars)
Cash and Cash Equivalents
Cash and money market funds	$	34.5		$	40.3
Commercial paper	36.2			32.2
Total	$	70.7		$	72.5
Trade Receivables – Net
Billed trade receivables	$	139.4		$	116.8
Unbilled trade receivables	0.2			0.7
Trade receivables, gross	139.6			117.5
Allowance for doubtful receivables	(0.8		)	(0.8		)
Trade receivables – net	$	138.8		$	116.7
Inventories
Finished products	$	66.8		$	79.5
Work-in-process	73.4			63.6

	March 31, 2016			December 31, 2015
	(In millions of dollars)
Raw materials	46.7			53.4
Operating supplies and repair and maintenance parts	23.7			23.1
Total	$	210.6		$	219.6
Prepaid Expenses and Other Current Assets
Current derivative assets – Notes 8 and 9	$	1.4		$	1.5
Current deferred tax assets1	—			49.6
Prepaid taxes	3.3			—
Prepaid insurance	1.1			1.9
Short-term restricted cash	0.3			0.3
Other	3.0			3.4
Total	$	9.1		$	56.7
Property, Plant and Equipment – Net
Land and improvements	$	22.7		$	22.7
Buildings and leasehold improvements	72.5			71.8
Machinery and equipment	559.3			549.0
Construction in progress	54.8			48.5
Property, plant and equipment – gross	709.3			692.0
Accumulated depreciation	(205.1		)	(196.9		)
Assets held for sale	0.3			0.3
Property, plant and equipment – net	$	504.5		$	495.4
Other Assets
Restricted cash	$	10.9		$	10.9
Deferred financing costs on Revolving Credit Facility	1.1			1.3
Deferred compensation plan assets	7.3			7.3
Derivative assets – Notes 8 and 9	0.2			0.1
Total	$	19.5		$	19.6
Other Accrued Liabilities
Current derivative liabilities – Notes 8 and 9	$	10.3		$	14.1
Uncleared cash disbursements	10.0			8.0
Accrued income taxes and taxes payable	8.6			3.1
Accrued annual contribution to VEBAs	—			19.6
Accrued contingent contribution to Union VEBA – Note 5	17.1			—
Short-term environmental accrual – Note 7	1.3			1.6
Accrued interest	5.5			1.5
Short-term deferred revenue	0.8			1.2
Other	2.9			3.6
Total	$	56.5		$	52.7

	March 31, 2016		December 31, 2015
	(In millions of dollars)
Long-Term Liabilities
Derivative liabilities – Notes 8 and 9	$	1.7	$	2.1
Income tax liabilities	0.8		0.7
Workers' compensation accruals	24.1		21.7
Long-term environmental accrual – Note 7	16.8		17.0
Long-term asset retirement obligations	4.9		4.8
Deferred compensation liability	7.8		7.7
Long-term deferred revenue	0.3		0.3
Long-term capital leases	0.1		0.1
Long-term portion of contingent contribution to Union VEBA – Note 5	12.8		29.9
Other long-term liabilities	3.2		3.2
Total	$	72.5	$	87.5