Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($) $ in Millions		Mar. 31, 2018	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Available-for-sale securities		$ 78
Available-for-sale securities, net unrealized gains		1
Cost method investments	[1]	$ 126	$ 219

[1] Cost method investments are primarily comprised of certain investments in China as of March 31, 2018. During the three months ended March 31, 2018, the Company sold its investment in SEEKAsia for $122 million in cash and recognized a $32 million gain in Other, net. See Note 12- Additional Financial Information.