Income Taxes - Net Impact of Tax Refund and Interest, Net of Tax, Recorded in Statement of Operations (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Other, net	$ (721)	[1]	$ 0	[1]	$ 0	[1]
Income tax benefit	721
Net impact to the Statement of Operations	$ 0

[1] See Note 17-Income Taxes