Investments - Schedule of Summarized Financial Information (Detail) - Foxtel [Member] - USD ($) $ in Millions		6 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Revenues		$ 1,220	$ 1,185
Operating income	[1]	184	184
Net income		$ 40	$ 94

[1] Includes Depreciation and amortization of $103 million and $111 million for the six months ended December 31, 2016 and 2015, respectively. Operating income before depreciation and amortization was $287 million and $295 million for the six months ended December 31, 2016 and 2015, respectively.