Income Taxes - Summary of Recognized Current and Deferred Income Taxes in Balance Sheets (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Other current assets	$ 61	$ 76
Other non-current assets	216	146
Other current liabilities	(1)	(36)
Deferred income taxes	(166)	(224)
Net deferred tax assets (liabilities)	$ 110	$ (38)