Investments - Schedule of Available-for-Sale Investments (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Jun. 30, 2014
Investments Schedule [Abstract]
Cost basis of available-for-sale investments	$ 151		$ 113
Accumulated gross unrealized gain	25		38
Accumulated gross unrealized loss	(23)		0
Fair value of available-for-sale investments	153	[1]	151	[1]
Net deferred tax liability	$ 2		$ 14

[1] In August 2014, REA Group Limited ("REA Group") completed the sale of a minority interest held in marketable securities for total cash consideration of $104 million. As a result of the sale, REA Group recognized a pre-tax gain of $29 million, which was reclassified out of accumulated other comprehensive income and included in Other, net in the Statement of Operations. In July 2014, REA Group purchased a 17.22% interest in iProperty Group Limited (ASX:IPP) ("iProperty") for total cash consideration of approximately $100 million. iProperty has online property advertising operations primarily in Malaysia, Indonesia, Hong Kong, Macau and Singapore. In October 2014, REA Group agreed to sell Squarefoot, its Hong Kong based business, to iProperty in exchange for an additional 2.21% interest in iProperty valued at approximately $13 million. The transaction is expected to be completed in the second quarter of fiscal 2015 and is subject to [customary closing conditions, including iProperty shareholder approval]. Also in October 2014, REA Group purchased an additional 0.5% interest in iProperty for approximately $2 million. Including the transactions noted above, REA Group will hold an approximate 19.9% interest in iProperty, which it expects to account for as an equity method investment.