Retirement Benefit Obligations - Schedule of Amounts Recognized in Balance Sheets (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	$ 4	$ 36
Other current liabilities	(10)	(12)
Retirement benefit obligations	(350)	(305)
Net amount recognized	(356)	(281)
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	0	0
Other current liabilities	0	0
Retirement benefit obligations	(109)	(80)
Net amount recognized	(109)	(80)
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	4	36
Other current liabilities	(1)	(1)
Retirement benefit obligations	(124)	(103)
Net amount recognized	(121)	(68)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	0	0
Other current liabilities	(9)	(11)
Retirement benefit obligations	(117)	(122)
Net amount recognized	$ (126)	$ (133)