Retirement Benefit Obligations - Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	$ 446	$ 539
Prior service cost (benefit)	(25)	(27)
Net amounts recognized	421	512
Domestic Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	126	130
Prior service cost (benefit)	0	0
Net amounts recognized	126	130
Foreign Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	325	403
Prior service cost (benefit)	7	9
Net amounts recognized	332	412
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses (gains)	(5)	6
Prior service cost (benefit)	(32)	(36)
Net amounts recognized	$ (37)	$ (30)