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Supplemental Balance Sheet Information Supplemental Balance Sheet Information (Tables) | 3 Months Ended
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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 assets 1 | — |  |  | 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 |

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