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Other Long Term Liabilities - Summary of Other Long Term Liabilities (Detail) - USD ($) $ in Millions | Jun. 30, 2015 | Jun. 30, 2014
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Other Non Current Liabilities [Line Items] |  |
Pension obligation | $ 4.9 | $ 0.0
Other | 3.9 | 0.0
Total other long term liabilities | $ 8.8 | $ 0.0

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