Retirement Benefit Obligations - Schedule of Components of Net Periodic Costs (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefits costs- Total	$ 7		$ 56		$ 45
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	4		1		0
Interest costs on projected benefit obligations	16		11		13
Expected return on plan assets	(17)		(13)		(13)
Amortization of deferred losses	4		3		2
Amortization of prior service costs	0		0		0
Settlements, curtailments and other	4		0		0
Net periodic benefits costs- Direct	11		2		2
Employees participation in 21st Century Fox plans	0		16		10
Corporate allocations	0	[1]	5	[1]	4	[1]
Net periodic benefits costs- Total	11		23		16
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	12		18		19
Interest costs on projected benefit obligations	51		51		60
Expected return on plan assets	(76)		(65)		(69)
Amortization of deferred losses	12		15		14
Amortization of prior service costs	0		0		0
Settlements, curtailments and other	3		15		8
Net periodic benefits costs- Direct	2		34		32
Employees participation in 21st Century Fox plans	0		0		0
Corporate allocations	0	[1]	0	[1]	0	[1]
Net periodic benefits costs- Total	2		34		32
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	1		1		2
Interest costs on projected benefit obligations	7		8		10
Expected return on plan assets	0		0		0
Amortization of deferred losses	(1)		3		1
Amortization of prior service costs	(13)		(13)		(16)
Settlements, curtailments and other	0		0		0
Net periodic benefits costs- Direct	(6)		(1)		(3)
Employees participation in 21st Century Fox plans	0		0		0
Corporate allocations	0	[1]	0	[1]	0	[1]
Net periodic benefits costs- Total	$ (6)		$ (1)		$ (3)

[1] The allocated expense includes corporate executives of 21st Century Fox, allocated using a proportional allocation methodology, which management has deemed as reasonable.