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Significant Accounting Policies Foreign Currency (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Other Income (Expense) [Member]      
Intercompany Foreign Currency Balance [Line Items]      
Transactional foreign currency gains (losses) $ (31.0) $ 4.0 $ (2.6)