Retirement Benefit Obligations - Schedule of Assumptions Used (Detail)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Postretirement Benefits
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.60%	2.40%	2.50%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate for PBO	2.40%	2.50%	3.30%
Discount rate for Service Cost	2.80%	2.90%	3.60%
Discount rate for Interest on PBO	1.70%	1.80%	2.90%
Domestic Pension Benefits
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.90%	2.90%	2.90%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate for PBO	2.90%	2.90%	3.60%
Discount rate for Service Cost	3.30%	3.40%	3.90%
Discount rate for Interest on PBO	2.20%	2.20%	3.20%
Expected return on plan assets	5.80%	5.50%	6.00%
Foreign Pension Benefits
Weighted-average assumptions used to determine benefit obligations
Discount rate	3.90%	1.90%	1.70%
Rate of increase in future compensation	3.90%	3.60%	3.10%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate for PBO	1.90%	1.70%	2.30%
Discount rate for Service Cost	1.80%	1.80%	2.50%
Discount rate for Interest on PBO	1.60%	1.50%	2.00%
Expected return on plan assets	3.30%	3.30%	4.20%
Rate of increase in future compensation	3.60%	3.10%	3.40%