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OTHER ASSETS (Tables) | 3 Months Ended
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Mar. 31, 2017
Other Assets [Abstract] |
Schedule of Other Assets | Included in other assets were the following:
| March 31, 2017 |  | December 31, 2016 |  | March 31, 2016
| ($ in millions)
Investments in non-consolidated affiliates | $ | 27.2 |  |  | $ | 26.7 |  |  | $ | 25.2 |
Deferred debt issuance costs | 3.0 |  |  | 2.6 |  |  | 3.1 |
Tax-related receivables | 16.1 |  |  | 17.5 |  |  | 14.4 |
Interest rate swaps | 8.3 |  |  | 7.7 |  |  | — |
Supply contracts | 560.4 |  |  | 566.7 |  |  | 402.2 |
Other | 22.2 |  |  | 23.2 |  |  | 18.9 |
Other assets | $ | 637.2 |  |  | $ | 644.4 |  |  | $ | 463.8 |

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- Definition Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets. + References No definition available. + Details
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