Related Party Transactions and 21st Century Fox Investment - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Jun. 28, 2013	Jun. 30, 2012
Related Party Transaction [Line Items]
Estimated cash and cash equivalents at distribution date				$ 2,600,000,000
Cash and cash equivalents	2,688,000,000	1,010,000,000	2,381,000,000		1,133,000,000
Cash distribution from related party	217,000,000	255,000,000
21st Century Fox [Member]
Related Party Transaction [Line Items]
Cash distribution from related party	217,000,000
Corporate allocations		62,000,000
General corporate expenses		26,000,000
Historical direct allocations		$ 36,000,000