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Income Taxes - Schedule of Components of Income Tax (Benefit) Expense (Parenthetical) (Detail) - Digital Education [Member] - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Income Taxes Disclosure [Line Items]      
Income tax benefit $ 174 $ 51 $ 77
Tax Benefits of Discontinued Operations [Member]      
Income Taxes Disclosure [Line Items]      
Income tax benefit discontinued operations 144    
Income tax benefit $ 30