Investments - Schedule of Summarized Financial Information (Detail) - Foxtel [Member] - USD ($) $ in Millions		9 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Schedule of Equity Method Investments [Line Items]
Revenues		$ 1,811	$ 1,763
Operating income	[1]	263	269
Net income		$ 40	$ 126

[1] Includes Depreciation and amortization of $155 million and $170 million for the nine months ended March 31, 2017 and 2016, respectively. Operating income before depreciation and amortization was $418 million and $439 million for the nine months ended March 31, 2017 and 2016, respectively.