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Income Taxes Income Taxes (Details 6)
$ in Millions
12 Months Ended
Jun. 30, 2017
USD ($)
State and Local Jurisdiction [Member]  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Limitations on Use June 2022 to June 2037
Operating Loss Carryforwards $ 19
Foreign Tax Authority [Member]  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Limitations on Use December 2028; June 2031 to June 2036
Operating Loss Carryforwards $ 15