Retirement Benefit Obligations - Schedule of Components of Net Periodic Costs (Income) (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	$ 1	$ 1	$ 2
Interest costs on projected benefit obligations	40	25	25
Expected return on plan assets	(43)	(51)	(50)
Amortization of deferred losses	19	19	20
Amortization of prior service credits	(4)	(4)	(4)
Settlements, curtailments and other	0	10	6
Net periodic benefit costs (income) – Total	$ 13	$ 0	$ (1)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other, net	Other, net	Other, net
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	$ 0	$ 0	$ 0
Interest costs on projected benefit obligations	2	1	2
Expected return on plan assets	0	0	0
Amortization of deferred losses	0	0	0
Amortization of prior service credits	(4)	(4)	(4)
Settlements, curtailments and other	0	0	0
Net periodic benefit costs (income) – Total	(2)	(3)	(2)
Domestic Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	0	0	0
Interest costs on projected benefit obligations	11	7	7
Expected return on plan assets	(11)	(15)	(13)
Amortization of deferred losses	5	5	5
Amortization of prior service credits	0	0	0
Settlements, curtailments and other	0	8	5
Net periodic benefit costs (income) – Total	5	5	4
Foreign Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	1	1	2
Interest costs on projected benefit obligations	27	17	16
Expected return on plan assets	(32)	(36)	(37)
Amortization of deferred losses	14	14	15
Amortization of prior service credits	0	0	0
Settlements, curtailments and other	0	2	1
Net periodic benefit costs (income) – Total	$ 10	$ (2)	$ (3)