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Other Expense (Tables) | 6 Months Ended
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Jun. 30, 2015
Other Income and Expenses [Abstract] |
Schedule of Other Expense | Other expense consists of:
| Three Months Ended June 30, |  | Six Months Ended June 30,
($ in millions) | 2015 |  | 2014 |  | 2015 |  | 2014
Executive retirement and related costs | $ | 10.9 |  |  | $ | — |  |  | $ | 10.9 |  |  | $ | — |
Development income | (0.4 | ) |  | (0.5 | ) |  | (0.8 | ) |  | (0.9 | )
Acquisition-related contingencies | 0.1 |  |  | 0.3 |  |  | 0.3 |  |  | 0.7 |
Other items | (0.4 | ) |  | 0.5 |  |  | (1.0 | ) |  | 1.2 |
| $ | 10.2 |  |  | $ | 0.3 |  |  | $ | 9.4 |  |  | $ | 1.0 |

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- Definition Schedule of Other Income and Expense, by Component [Table Text Block] + References No definition available. + Details
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