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Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets | The gross carrying amount and accumulated amortization for intangible assets consisted of the following ($ in millions):
| June 30, 2016 |  | December 31, 2015
| Gross Carrying Amount |  | Accumulated Amortization* |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization* |  | Net Carrying Amount
Amortized intangible assets |  |  |  |  |  |  |  |
Engineered Papers
Customer-related intangibles | $ | 10.0 |  |  | $ | 10.0 |  |  | $ | — |  |  | $ | 10.0 |  |  | $ | 10.0 |  |  | $ | — |
Advanced Materials & Structures
Customer Relationships | 167.7 |  |  | 12.2 |  |  | 155.5 |  |  | 167.7 |  |  | 6.4 |  |  | 161.3 |
Developed Technology | 16.0 |  |  | 3.2 |  |  | 12.8 |  |  | 16.0 |  |  | 2.4 |  |  | 13.6 |
Customer Contracts | 0.9 |  |  | 0.7 |  |  | 0.2 |  |  | 0.9 |  |  | 0.5 |  |  | 0.4 |
Non-Compete Agreements | 1.7 |  |  | 0.3 |  |  | 1.4 |  |  | 1.7 |  |  | 0.1 |  |  | 1.6 |
Patents | 1.5 |  |  | 0.1 |  |  | 1.4 |  |  | 1.5 |  |  | 0.1 |  |  | 1.4 |
Total | $ | 197.8 |  |  | $ | 26.5 |  |  | $ | 171.3 |  |  | $ | 197.8 |  |  | $ | 19.5 |  |  | $ | 178.3 |
Unamortized intangible assets (Advanced Materials & Structures)
Trade names | $ | 35.6 |  |  |  |  |  |  | $ | 35.6 |  |  |  |  |
* Accumulated amortization also includes adjustments for foreign currency translation.

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