Investments - Schedule of Earnings of Equity Affiliates (Parenthetical) (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2013	Jun. 30, 2015		Jun. 30, 2014	Jun. 30, 2013	Nov. 30, 2012
Schedule of Equity Method Investments [Line Items]
Amortization of excess basis allocated to finite-lived intangible assets		$ 102		$ 95	$ 94
Equity method investments dividends received		$ 138		153	220
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage		50.00%	[1]			50.00%
Equity method investments dividends received		$ 107		151
SKY Network Television Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage	44.00%
Sale of equity interest	$ 675
Gain on sale of investment					321
Equity method investments dividends received					60
Equity Earnings Of Affiliates [Member] | Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Amortization of excess basis allocated to finite-lived intangible assets		$ 57		$ 62	$ 43
Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage		20.00%
Minimum [Member] | Consolidated Media Holdings Ltd. [Member] | Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage						25.00%
Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage		50.00%
Maximum [Member] | Consolidated Media Holdings Ltd. [Member] | Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage						50.00%

[1] The change in the Foxtel investment for the fiscal year ended June 30, 2015 was primarily due to the impact of foreign currency fluctuations. For the fiscal years ended June 30, 2015 and 2014, the Company received dividends from Foxtel of $107 million and $151 million, respectively. The Company's investment in Foxtel exceeds its equity in the underlying net assets by approximately $1.6 billion as of June 30, 2015. This amount represented the excess cost over the Company's proportionate share of its investment's underlying net assets. This has been allocated between finite-lived intangible assets, indefinite-lived intangible assets and goodwill. The finite-lived intangible assets of approximately $0.5 billion primarily represent subscriber relationships with a weighted remaining average useful life of 8 years.