Postretirement and Other Employee Benefits - Schedule of Weighted-Average Actuarial Assumptions (Details)	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Net periodic benefit cost:
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%
PBO:
Expected long-term return on plan assets	3.40%	3.30%	3.70%
Rate of compensation increase	1.10%	1.10%	1.80%
Discount rate	2.40%	2.20%	2.10%