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Goodwill (Tables) | 6 Months Ended
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Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The changes in the carrying amount of goodwill by segment for the six months ended June 30, 2016 were as follows ($ in millions):
| Engineered Papers |  | Advanced Materials & Structures |  | Total
Goodwill as of December 31, 2015 | $ | 4.8 |  |  | $ | 228.5 |  |  | $ | 233.3 |
Goodwill adjusted during the period | — |  |  | 0.1 |  |  | 0.1 |
Foreign currency translation adjustments | — |  |  | (0.9 | ) |  | (0.9 | )
Goodwill as of June 30, 2016 | $ | 4.8 |  |  | $ | 227.7 |  |  | $ | 232.5 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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