Investments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Sep. 30, 2014
Investment [Line Items]
Percentage of subscriber revenues	1.00%
Foxtel [Member]
Investment [Line Items]
Increase in net income	$ 10

Equity Method Investment Increase Decrease In Net Income Percentage

No definition available.

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Period Type:	instant