Relationship between News Corp and 21st Century Fox - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 28, 2013
Related Party Transaction [Line Items]
Estimated cash and cash equivalents at distribution date					$ 2,600,000,000
Cash and cash equivalents	2,735,000,000	2,688,000,000	3,145,000,000	2,381,000,000
Cash distribution from related party	0	217,000,000
Spinoff [Member]
Related Party Transaction [Line Items]
Distribution date	Jun. 28, 2013
Distribution terms	As of the effective time of the Separation, all of the outstanding shares of the Company were distributed to 21st Century Fox stockholders based on a distribution ratio of one share of Company Class A or Class B Common Stock for every four shares of 21st Century Fox Class A or Class B Common Stock, respectively, held of record as of June 21, 2013.
21st Century Fox [Member]
Related Party Transaction [Line Items]
Cash distribution from related party		200,000,000
Accounts due from related party	60,000,000		66,000,000
21st Century Fox [Member] | U.K. Newspaper Matters Indemnification [Member]
Related Party Transaction [Line Items]
Accounts due from related party	$ 60,000,000		$ 66,000,000