Investments - Schedule of Earnings of Equity Affiliates (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]
Equity earnings of affiliates	$ 13	$ 26
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Equity earnings of affiliates	13	5
Pay Television and Cable Network Programming Equity Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Equity earnings of affiliates	0	22
Other Equity Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Equity earnings of affiliates	$ 0	$ (1)