Investments - Schedule of Investments (Detail) - USD ($) $ in Millions		Sep. 30, 2018	Jun. 30, 2018
Investments Schedule [Abstract]
Equity method investments	[1]	$ 164	$ 173
Equity securities	[2]	226	220
Total Investments		$ 390	$ 393

[1] Equity method investments are primarily comprised of Elara Technologies Pte. Ltd., which operates PropTiger.com, Makaan.com and Housing.com and new Foxtel's investment in the Nickelodeon Australia Joint Venture.

[2] Equity securities are primarily comprised of the Company's investment in HT&E Limited, which operates a portfolio of Australian radio and outdoor media assets and certain investments in China.