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Statement of Cash Flows (Tables) | 12 Months Ended
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Dec. 31, 2017
Schedule of Supplemental Cash Flow Information | Supplemental cash flow information is as follows:
Years ended December 31 (dollars in millions) |  | 2017 |  |  | 2016 |  |  | 2015 |
Net change in current assets and liabilities, net of acquisitions: |  |  |  |  |  |  |  |  |  |  |  |
Receivables |  | $ | (75.8 | ) |  | $ | (15.1 | ) |  | $ | (25.9 | )
Inventories |  |  | (37.5 | ) |  |  | (23.4 | ) |  |  | (14.7 | )
Other current assets |  |  | (9.0 | ) |  |  | (3.2 | ) |  |  | (4.6 | )
Trade payables |  |  | (5.1 | ) |  |  | 101.5 |  |  |  | 31.0 |
Accrued liabilities, including payroll and benefits |  |  | 12.2 |  |  |  | 6.0 |  |  |  | 19.8 |
Income taxes (refundable) payable |  |  | (12.6 | ) |  |  | 2.7 |  |  |  | 11.2 |
|  | $ | (127.8 | ) |  | $ | 68.5 |  |  | $ | 16.8 |
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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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