Retirement Benefit Obligations - Schedule of Accumulated and Projected Benefit Obligations and Fair Value of Plan Assets for Funded and Unfunded Pension Plans (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 946	$ 1,083	$ 1,549
Fair value of plan assets	933	1,051	1,447
Domestic Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	241	260	339
Accumulated benefit obligation	241	260
Fair value of plan assets	204	220	285
Domestic Pension Benefits | Funded Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	234	253
Accumulated benefit obligation	234	253
Fair value of plan assets	204	220
Domestic Pension Benefits | Unfunded Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	7	7
Accumulated benefit obligation	7	7
Fair value of plan assets	0	0
Foreign Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	646	755	1,124
Accumulated benefit obligation	642	751
Fair value of plan assets	729	831	$ 1,162
Foreign Pension Benefits | Funded Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	599	701
Accumulated benefit obligation	595	697
Fair value of plan assets	729	831
Foreign Pension Benefits | Unfunded Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	47	54
Accumulated benefit obligation	47	54
Fair value of plan assets	$ 0	$ 0