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Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2015
Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | Components of accumulated other comprehensive loss were as follows ($ in millions):
| September 30, 2015 |  | December 31, 2014
Accumulated pension and OPEB liability adjustments, net of income tax of $22.0 million and $21.0 million at September 30, 2015 and December 31, 2014, respectively | $ | (40.2 | ) |  | $ | (38.4 | )
Accumulated unrealized loss on derivative instruments, net of income tax of $0.5 million and $0.0 million at September 30, 2015 and December 31, 2014, respectively | (26.1 | ) |  | (8.3 | )
Accumulated unrealized foreign currency translation adjustments | (71.9 | ) |  | (29.8 | )
Accumulated other comprehensive loss | $ | (138.2 | ) |  | $ | (76.5 | )
Schedule of Comprehensive Income (Loss) | Changes in the components of accumulated other comprehensive loss were as follows ($ in millions):
| Three Months Ended
| September 30, 2015 |  | September 30, 2014
| Pre-tax |  | Tax |  | Net of Tax |  | Pre-tax |  | Tax |  | Net of Tax
Pension and OPEB liability adjustments | $ | (0.8 | ) |  | $ | 0.3 |  |  | $ | (0.5 | ) |  | $ | 1.2 |  |  | $ | (0.5 | ) |  | $ | 0.7 |
Unrealized (loss) gain on derivative instruments | (11.9 | ) |  | 0.2 |  |  | (11.7 | ) |  | (1.0 | ) |  | (0.1 | ) |  | (1.1 | )
Unrealized foreign currency translation adjustments | (6.3 | ) |  | — |  |  | (6.3 | ) |  | (37.2 | ) |  | — |  |  | (37.2 | )
Total | $ | (19.0 | ) |  | $ | 0.5 |  |  | $ | (18.5 | ) |  | $ | (37.0 | ) |  | $ | (0.6 | ) |  | $ | (37.6 | )
| Nine Months Ended
| September 30, 2015 |  | September 30, 2014
| Pre-tax |  | Tax |  | Net of Tax |  | Pre-tax |  | Tax |  | Net of Tax
Pension and OPEB liability adjustments | $ | (2.8 | ) |  | $ | 1.0 |  |  | $ | (1.8 | ) |  | $ | 3.7 |  |  | $ | (1.4 | ) |  | $ | 2.3 |
Unrealized (loss) gain on derivative instruments | (18.3 | ) |  | 0.5 |  |  | (17.8 | ) |  | 5.8 |  |  | 0.4 |  |  | 6.2 |
Unrealized foreign currency translation adjustments | (42.1 | ) |  | — |  |  | (42.1 | ) |  | (39.6 | ) |  | — |  |  | (39.6 | )
Total | $ | (63.2 | ) |  | $ | 1.5 |  |  | $ | (61.7 | ) |  | $ | (30.1 | ) |  | $ | (1.0 | ) |  | $ | (31.1 | )

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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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