Supplemental Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Supplemental Balance Sheet Disclosures

Supplemental Balance Sheet Information

	December 31, 2018		December 31, 2017
	(In millions of dollars)
Cash and Cash Equivalents
Cash and money market funds	$	22.9	$	23.5
Commercial paper	102.7		27.6
Total	$	125.6	$	51.1

	December 31, 2018			December 31, 2017
	(In millions of dollars)
Trade Receivables, net
Billed trade receivables	$	179.5		$	165.9
Unbilled trade receivables	1.1			0.3
Trade receivables, gross	180.6			166.2
Allowance for doubtful receivables	(0.8		)	(1.2		)
Trade receivables, net	$	179.8		$	165.0
Inventories
Finished products	$	48.0		$	63.8
Work-in-process	85.6			78.3
Raw materials	75.0			61.3
Operating supplies	6.5			4.5
Total	$	215.1		$	207.9
Property, Plant and Equipment, net
Land and improvements	$	21.4		$	21.1
Buildings and leasehold improvements	97.0			92.1
Machinery and equipment	755.6			689.1
Construction in progress	43.6			35.1
Property, plant and equipment – gross	917.6			837.4
Accumulated depreciation	(307.4		)	(267.9		)
Assets held for sale	1.6			1.9
Property, plant and equipment, net	$	611.8		$	571.4
Other Accrued Liabilities
Uncleared cash disbursements	$	4.8		$	7.3
Accrued income taxes and other taxes payable	6.5			6.8
Accrued annual contribution to VEBAs – Note 4	2.1			15.7
Accrued interest	2.9			2.9
Other – Note 7	27.7			7.8
Total	$	44.0		$	40.5
Long-Term Liabilities
Workers' compensation accruals	$	24.6		$	22.6
Long-term environmental accrual – Note 9	14.3			15.8
Other long-term liabilities	27.5			21.6
Total	$	66.4		$	60.0