Postretirement and Other Employee Benefits - Schedule of Weighted-Average Actuarial Assumptions (Details)	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
Net periodic benefit cost:
Expected long-term return on plan assets	3.70%	3.70%	3.60%
Rate of compensation increase	1.80%	1.90%	2.10%
Discount rate	2.10%	2.80%	2.60%
PBO:
Expected long-term return on plan assets	3.30%	3.70%	3.70%
Rate of compensation increase	1.10%	1.80%	1.90%
Discount rate	2.20%	2.10%	2.80%