Income Taxes - Schedule of (Loss) Income Before Income Tax (Benefit) Expense Attributable to Jurisdictions (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	[1]	Jun. 30, 2013
Income Tax Disclosure [Abstract]
U.S.	$ (348)	$ (821)		$ (432)
Foreign	404	424		605
Income (loss) before income tax (expense) benefit	$ 56	$ (397)		$ 173

[1] See Discussion of Foreign Tax Refund below.