Income Taxes - Schedule of (Loss) Income Before Income Tax (Benefit) Expense Attributable to Jurisdictions (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013	Jun. 30, 2012
Income Tax Disclosure [Abstract]
U.S.	$ (821)	[1]	$ (432)	$ (829)
Foreign	424	[1]	605	(1,548)
(Loss) income before income tax benefit	$ (397)	[1]	$ 173	$ (2,377)

[1] See discussion of Foreign Tax Refund below.