Retirement Benefit Obligations - Schedule of Amounts in Accumulated Other Comprehensive Loss Expected to be Recognized as Component of Net Periodic Benefit Cost (Detail) $ in Millions	12 Months Ended
	Jun. 30, 2017 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	$ 22
Prior service (benefit) cost	(3)
Net amounts recognized	19
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	5
Prior service (benefit) cost	0
Net amounts recognized	5
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	17
Prior service (benefit) cost	0
Net amounts recognized	17
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	0
Prior service (benefit) cost	(3)
Net amounts recognized	$ (3)