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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Future Minimum Rental Commitments For Non-Cancelable Leases |
($ in millions) |  | Capital Leases | Operating Leases | Total
2018 |  | $ | 2.3 |  | 10.0 |  | 12.3 |
2019 |  | 0.1 |  | 7.5 |  | 7.6 |
2020 |  | — |  | 6.0 |  | 6.0 |
2021 |  | — |  | 3.7 |  | 3.7 |
2022 |  | — |  | 2.1 |  | 2.1 |
After 2022 |  | — |  | 2.6 |  | 2.6 |
Total minimum payment required |  | $ | 2.4 |  | 31.9 |  | 34.3 |

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for capital and operating leases having initial or remaining non-cancelable lease terms in excess of one year and the total minimum rentals to be received in the future under non-cancelable subleases as of the balance sheet date. + References No definition available. + Details
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- References No definition available. + Details
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