Investments - Schedule of Summarized Financial Information (Detail) - Foxtel [Member] - USD ($) $ in Millions		9 Months Ended	12 Months Ended
		Apr. 02, 2018	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2018
Schedule of Equity Method Investments [Line Items]
Revenues		$ 1,818	$ 2,411	$ 2,379
Operating income	[1]	155	353	373
Net income		$ 64	59	$ 180
Current assets			642		$ 0
Non-current assets			2,517		0
Current liabilities			758		0
Non-current liabilities			$ 2,557		$ 0

[1] Includes Depreciation and amortization of $187 million for the period ended April 2, 2018 and $215 million and $231 million for the fiscal years ended June 30, 2017 and 2016, respectively. Operating income before depreciation and amortization was $342 million for the period ended April 2, 2018 and $568 million, and $604 million for the fiscal years ended June 30, 2017 and 2016, respectively.