Additional Financial Information - Components of Other, Net (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Other Income and Expenses [Abstract]
Gain on iProperty transaction	[1]	$ 29	$ 0	$ 29	$ 0
Gain on sale of marketable securities	[2]	0	0	0	29
Dividends received from cost method investments		0	0	0	20
Gain on sale of cost method investment		0	14	0	14
Other, net		4	(2)	3	7
Total Other, net		$ 33	$ 12	$ 32	$ 70

[1] The Company recorded a $29 million gain resulting from the revaluation of REA Group's previously held equity interest in iProperty. See Note 2-Acquisitions, Disposals and Other Transactions.

[2] In August 2014, 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.