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Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2015
Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | Components of accumulated other comprehensive loss were as follows ($ in millions):
| June 30, 2015 |  | December 31, 2014
Accumulated pension and OPEB liability adjustments, net of income tax of $21.7 million and $21.0 million at June 30, 2015 and December 31, 2014, respectively | $ | (39.7 | ) |  | $ | (38.4 | )
Accumulated unrealized loss on derivative instruments, net of income tax of $0.3 million and $0.0 million at June 30, 2015 and December 31, 2014, respectively | (14.4 | ) |  | (8.3 | )
Accumulated unrealized foreign currency translation adjustments | (65.6 | ) |  | (29.8 | )
Accumulated other comprehensive loss | $ | (119.7 | ) |  | $ | (76.5 | )
Schedule of Comprehensive Income (Loss) | Changes in the components of accumulated other comprehensive loss were as follows ($ in millions):
| Three Months Ended
| June 30, 2015 |  | June 30, 2014
| Pre-tax |  | Tax |  | Net of Tax |  | Pre-tax |  | Tax |  | Net of Tax
Pension and OPEB liability adjustments | $ | (1.1 | ) |  | $ | 0.4 |  |  | $ | (0.7 | ) |  | $ | 1.3 |  |  | $ | (0.5 | ) |  | $ | 0.8 |
Unrealized gain (loss) on derivative instruments | 4.1 |  |  | (0.1 | ) |  | 4.0 |  |  | 3.0 |  |  | — |  |  | 3.0 |
Unrealized foreign currency translation adjustments | 12.9 |  |  | — |  |  | 12.9 |  |  | (0.7 | ) |  | — |  |  | (0.7 | )
Total | $ | 15.9 |  |  | $ | 0.3 |  |  | $ | 16.2 |  |  | $ | 3.6 |  |  | $ | (0.5 | ) |  | $ | 3.1 |
| Six Months Ended
| June 30, 2015 |  | June 30, 2014
| Pre-tax |  | Tax |  | Net of Tax |  | Pre-tax |  | Tax |  | Net of Tax
Pension and OPEB liability adjustments | $ | (2.0 | ) |  | $ | 0.7 |  |  | $ | (1.3 | ) |  | $ | 2.5 |  |  | $ | (0.9 | ) |  | $ | 1.6 |
Unrealized (loss) gain on derivative instruments | (6.4 | ) |  | 0.3 |  |  | (6.1 | ) |  | 6.8 |  |  | 0.5 |  |  | 7.3 |
Unrealized foreign currency translation adjustments | (35.8 | ) |  | — |  |  | (35.8 | ) |  | (2.4 | ) |  | — |  |  | (2.4 | )
Total | $ | (44.2 | ) |  | $ | 1.0 |  |  | $ | (43.2 | ) |  | $ | 6.9 |  |  | $ | (0.4 | ) |  | $ | 6.5 |

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- Definition Other Comprehensive Income [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e526-108580 + Details
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