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Supplemental Balance Sheet Information (Tables) | 12 Months Ended
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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 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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