Postretirement and Other Employee Benefits - Schedule of Benefit Obligations and Plan Assets, Changes in Benefit Obligation and Plan Assets and Funded Status of Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025
Change in PBO
Beginning PBO	$ 537	$ 513
Service cost	25	23
Interest cost	12	11
Actuarial (gain) loss	(16)	5
Settlements paid from plan assets	(34)	(47)
Total benefits paid	(8)	(10)
Plan participants’ contributions	13	13
Effect of conversion to U.S. dollars	(4)	29
Ending PBO	525	537
Change in plan assets
Beginning fair value of plan assets	548	524
Actual return on plan assets	35	21
Settlements paid from plan assets	(34)	(47)
Employer contributions	17	16
Benefits paid from plan assets	(7)	(8)
Plan participants’ contributions	13	13
Effect of conversion to U.S. dollars	(5)	29
Ending fair value of plan assets	567	548
Funded status	42	11
Amounts recognized in the Consolidated Balance Sheets
Accrued benefit liability, current	2	2
Accrued benefit asset, noncurrent	44	13
Accumulated other comprehensive loss
Actuarial gain, before tax	(72)	(47)
Prior service cost, before tax	$ 12	$ 18