Investments - Schedule of Summarized Financial Information (Detail) - Foxtel [Member] - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Schedule of Equity Method Investments [Line Items]
Revenues		$ 2,411	$ 2,379	$ 2,658
Operating income	[1]	353	373	441
Net income		59	180	$ 232
Current assets		642	605
Non-current assets		2,517	2,470
Current liabilities		758	764
Non-current liabilities		$ 2,557	$ 2,534

[1] Includes Depreciation and amortization of $215 million, $231 million and $319 million for the fiscal years ended June 30, 2017, 2016 and 2015, respectively. Operating income before depreciation and amortization was $568 million, $604 million, and $760 million for the fiscal years ended June 30, 2017, 2016 and 2015, respectively.