Retirement Benefit Obligations - Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses	$ 108	$ 121
Prior service (benefit)	0	0
Net amounts recognized	108	121
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses	420	351
Prior service (benefit)	0	0
Net amounts recognized	420	351
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses	18	9
Prior service (benefit)	(54)	(27)
Net amounts recognized	$ (36)	$ (18)