Retirement Benefit Obligations - Schedule of Amounts Recognized in Balance Sheets (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	$ 134	$ 133
Other current liabilities	(13)	(10)
Retirement benefit obligations	(134)	(155)
Net amount recognized	(13)	(32)
Domestic Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	0	0
Other current liabilities	0	0
Retirement benefit obligations	(37)	(40)
Net amount recognized	(37)	(40)
Foreign Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	134	133
Other current liabilities	(6)	(2)
Retirement benefit obligations	(45)	(55)
Net amount recognized	83	76
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	0	0
Other current liabilities	(7)	(8)
Retirement benefit obligations	(52)	(60)
Net amount recognized	$ (59)	$ (68)