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Supplemental Balance Sheet Information Supplemental Balance Sheet Information (Tables) | 3 Months Ended
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Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplemental Balance Sheet Disclosures |
| March 31, 2017 |  | December 31, 2016
| (In millions of dollars)
Cash and Cash Equivalents |  |  |
Cash and money market funds | $ | 23.5 |  |  | $ | 37.9 |
Commercial paper | 10.9 |  |  | 17.3 |
Total | $ | 34.4 |  |  | $ | 55.2 |
Trade Receivables – Net |  |  |
Billed trade receivables | $ | 157.6 |  |  | $ | 138.2 |
Unbilled trade receivables | 0.5 |  |  | 0.3 |
Trade receivables, gross | 158.1 |  |  | 138.5 |
Allowance for doubtful receivables | (1.1 | ) |  | (0.8 | )
Trade receivables – net | $ | 157.0 |  |  | $ | 137.7 |
Inventories |  |  |
Finished products | $ | 68.4 |  |  | $ | 73.8 |
Work-in-process | 75.3 |  |  | 71.7 |
Raw materials | 54.7 |  |  | 51.1 |
Operating supplies | 5.1 |  |  | 5.0 |
Total | $ | 203.5 |  |  | $ | 201.6 |
Property, Plant and Equipment – Net |  |  |
Land and improvements | $ | 22.7 |  |  | $ | 22.7 |
Buildings and leasehold improvements | 89.0 |  |  | 88.6 |
Machinery and equipment | 620.8 |  |  | 615.1 |
Construction in progress | 42.3 |  |  | 34.8 |
Property, plant and equipment – gross | 774.8 |  |  | 761.2 |
Accumulated depreciation | (239.3 | ) |  | (230.6 | )
Assets held for sale | 0.3 |  |  | 0.3 |
Property, plant and equipment – net | $ | 535.8 |  |  | $ | 530.9 |
| March 31, 2017 |  | December 31, 2016
| (In millions of dollars)
Other Accrued Liabilities |  |  |
Uncleared cash disbursements | $ | 4.6 |  |  | $ | 5.8 |
Accrued income taxes and taxes payable | 9.5 |  |  | 4.3 |
Accrued annual contribution to VEBAs | 11.5 |  |  | 20.0 |
Accrued interest | 8.4 |  |  | 2.9 |
Other | 6.4 |  |  | 7.1 |
Total | $ | 40.4 |  |  | $ | 40.1 |
Long-Term Liabilities |  |  |  |
Workers' compensation accruals | $ | 24.5 |  |  | $ | 25.0 |
Long-term environmental accrual – Note 7 | 15.8 |  |  | 15.8 |
Long-term portion of contingent contribution to Union VEBA – Note 5 | — |  |  | 12.8 |
Other long-term liabilities | 19.8 |  |  | 19.6 |
Total | $ | 60.1 |  |  | $ | 73.2 |

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