Retirement Benefit Obligations - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Jun. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 1,286	$ 1,506	$ 1,535	$ 1,286
Projected benefit obligations		1,639	1,787	1,752	1,639
Contribution of pension by the Company	[1]		9	137
Net pension and postretirement benefits liability			281	217
Accumulated pension benefit obligations			1,639	1,590
Net periodic benefit costs			(4)	7	56
Settlements, curtailments and other			2	$ 7	15
Pension plan contributions for next fiscal year			$ 25
21st Century Fox [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		58			58
Projected benefit obligations		106			106
Other comprehensive income		36			36
Other comprehensive income, net of tax		22			22
Contribution of pension by the Company		20
21st Century Fox [Member] | Unfunded Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligations		11			11
Other comprehensive income		3			3
Other comprehensive income, net of tax		$ 2			$ 2
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension asset portfolio, percentage			31.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension asset portfolio, percentage			54.00%
Cash and Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension asset portfolio, percentage			15.00%

[1] During the first quarter of fiscal 2014 approximately $37 million of contributions were made to a foreign pension plan by a third party in connection with the sale of a business in a prior period on behalf of former employees who retained certain pension benefits. This contribution reduced the Company's Retirement benefit obligation and resulted in a gain being recognized in Other, net in the Statement of Operations during the fiscal year ended June 30, 2014.