Retirement Benefit Obligations - Schedule of Amounts in Accumulated Other Comprehensive Income Expected to be Recognized as Component of Net Periodic Pension Cost (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses	$ 3
Prior service (benefit)	0
Net amounts recognized	3
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses	13
Prior service (benefit)	0
Net amounts recognized	13
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses	0
Prior service (benefit)	(13)
Net amounts recognized	$ (13)