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Other Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2018
Other Current Liabilities [Abstract] |
Other current liabilities |
($ in millions) | 2018 |  | 2017
Deferred income | $ | 25.5 |  |  | $ | 18.4 |
Other accrued expenses | 26.2 |  |  | 27.7 |
Dividends payable | 11.3 |  |  | 10.4 |
Restructuring obligations | 3.3 |  |  | 2.1 |
Other | 10.3 |  |  | 18.4 |
Total other current liabilities | $ | 76.6 |  |  | $ | 77.0 |

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