Income Taxes - Net Impact of Tax Refund and Interest, Net of Tax, Recorded in Statement of Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2014		Sep. 30, 2013
Components Of Income Tax Expense Benefit [Line Items]
Other, net	$ 0	[1]	$ (483)	[1]
21st Century Fox [Member]
Components Of Income Tax Expense Benefit [Line Items]
Other, net			(483)
Income tax benefit			483
Net impact to the Statement of Operations			$ 0

[1] See Note 12-Income Taxes