Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	Aug. 06, 2015	Aug. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 28, 2013	May. 31, 2013
Class of Stock [Line Items]
Common stock, shares authorized			25,000,000
Common stock, par value			$ 0.01
Preferred Stock, shares authorized			25,000,000
Preferred Stock, par value			$ 0.01
Distribution of shares, description			One share of Class A Common Stock of the Company for every four shares of 21st Century Fox Class A Common Stock and one share of Class B Common Stock of the Company for every four shares of 21st Century Fox Class B Common Stock
Common stock, shares outstanding					579,000,000
Dividend declaration date			2015-08
Dividend payable date			Oct. 21, 2015
Dividend record date			Sep. 16, 2015
Common Stock, Voting Rights			Holders of the Company's Class B Common Stock are entitled to one vote for each share held of record on all matters submitted to a vote of the stockholders.
Aggregate cost of shares repurchased			$ 32
Number of common share attached to one right			1
Conditions under which rights become exercisable			The rights, unless redeemed or exchanged, will become exercisable for common stock of the Company 10 business days after public announcement that a person or group has obtained beneficial ownership (defined to include stock which a person has the right to acquire, regardless of whether such right is subject to the passage of time or the satisfaction of conditions), including by means of a tender offer, of 15% or more of the outstanding shares of the Company’s Class B Common Stock. Following such acquisition of beneficial ownership, each right will entitle its holder (other than the acquiring person or group) to purchase, at the exercise price (subject to adjustments provided in the rights agreement), a number of shares of the Company’s Class A or Class B Common Stock, as applicable, having a then-current market value of twice the exercise price, and in the event of a subsequent merger or other acquisition of the Company or transfer of 50% or more of the Company, to purchase, at the exercise price, a number of shares of common stock of the acquiring entity having a then-current market value of twice the exercise price. The exercise price for the Company rights will be $90.00, subject to certain adjustments.
Exercise price of rights			$ 90.00
Conditions under which rights not become exercisable			The rights will not become exercisable by virtue of (i) any person’s or group’s beneficial ownership, as of the Distribution Date, of 15% or more of the Class B Common Stock of the Company, unless such person or group acquires beneficial ownership of additional shares of the Company’s Class B Common Stock after June 18, 2015; (ii) the repurchase of the Company’s shares that causes a holder to become the beneficial owner of 15% or more of the Company’s Class B Common Stock, unless such holder acquires beneficial ownership of additional shares representing one percent or more of the Company’s Class B Common Stock; (iii) acquisitions by way of a pro rata stock dividend or a stock split; (iv) acquisitions solely as a result of any unilateral grant of any security by the Company or through the exercise of any options, warrants, rights or similar interests (including restricted stock) granted by the Company to its directors, officers and employees pursuant to any equity incentive or award plan; or (v) certain acquisitions determined by the Company’s Board of Directors to be inadvertent, provided, that following such acquisition, the acquirer promptly, but in any case within 10 business days, divests a sufficient number of shares so that such person would no longer otherwise qualify as an acquiring person.
Subsequent Event [Member]
Class of Stock [Line Items]
Remaining authorized amount under stock repurchase program	$ 455
Minimum [Member]
Class of Stock [Line Items]
Percentage of outstanding shares of voting common stock			15.00%
Transfer percentage			50.00%
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares authorized			1,500,000,000	1,500,000,000
Common stock, par value			$ 0.01	$ 0.01		$ 0.01
Common stock, shares outstanding			381,914,964	379,392,985	379,000,000	379,000,000
Aggregate amount of shares authorized to be repurchased							$ 500
Number of shares repurchased			2,000,000
Class A Common Stock [Member] | Subsequent Event [Member]
Class of Stock [Line Items]
Cash dividend declared		$ 0.10
Number of shares repurchased	3,000,000
Aggregate cost of shares repurchased	$ 45
Class B Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares authorized			750,000,000	750,000,000
Common stock, par value			$ 0.01	$ 0.01		$ 0.01
Common stock, shares outstanding			199,630,240	199,630,240	200,000,000	200,000,000
Class B Common Stock [Member] | Subsequent Event [Member]
Class of Stock [Line Items]
Cash dividend declared		$ 0.10