Postretirement and Other Employee Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Retirement Benefits [Abstract]
Service cost	$ 6	$ 5
Interest cost	3	3
Expected long-term return on plan assets	(5)	(4)
Recognized actuarial gain	0	(2)
Amortization of actuarial gain	0	(1)
Amortization of prior service cost	1	1
Net periodic benefit cost	$ 5	$ 2
Percentage of gain (loss) corridor	10.00%