Retirement Benefit Obligations - Schedule of Amounts in Accumulated Other Comprehensive (Loss) Income Expected to be Recognized as Component of Net Periodic Pension Cost (Detail) $ in Millions	12 Months Ended
	Jun. 30, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	$ 19
Prior service (benefit) cost	(7)
Net amounts recognized	12
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	4
Prior service (benefit) cost	0
Net amounts recognized	4
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	15
Prior service (benefit) cost	0
Net amounts recognized	15
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	0
Prior service (benefit) cost	(7)
Net amounts recognized	$ (7)