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Leases (Tables) | 12 Months Ended
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Dec. 31, 2016
Leases [Abstract] |
Schedule of Rent Expense | Net rental expense for operating leases for the years ended December 31, 2016, 2015 and 2014 was:
DOLLARS IN MILLIONS |  | 2016 |  | 2015 |  | 2014
Minimum Rental Expense |  | $ | 21.2 |  |  | $ | 20.7 |  |  | $ | 21.5 |
Less Sublease Rental Income |  | (1.6 | ) |  | (1.7 | ) |  | (1.3 | )
Net Rental Expense |  | $ | 19.6 |  |  | $ | 19.0 |  |  | $ | 20.2 |
Schedule of Future Minimum Lease Payments for Capital and Operating Leases | Future minimum lease payments under capital and operating leases at December 31, 2016 were:
DOLLARS IN MILLIONS |  | Capital Leases |  | Operating Leases
2017 |  | $ | 0.7 |  |  | $ | 17.4 |
2018 |  | 0.1 |  |  | 13.9 |
2019 |  | — |  |  | 11.5 |
2020 |  | — |  |  | 9.2 |
2021 |  | — |  |  | 7.3 |
2022 and Thereafter |  | — |  |  | 15.2 |
Total Future Payments |  | $ | 0.8 |  |  | $ | 74.5 |
Less Imputed Interest |  | (0.1 | ) |  |
Present Value of Minimum Capital Lease Payments |  | $ | 0.7 |  |  |

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- Definition Schedule of Future Minimum Lease Payments for Capital and Operating Leases [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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