Postretirement and Other Employee Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Retirement Benefits [Abstract]
Service cost	$ 5	$ 4
Interest cost	3	3
Expected long-term return on plan assets	(4)	(5)
Recognized actuarial gain	(2)	(2)
Amortization of actuarial gains	(1)	(1)
Amortization of prior service cost	1	1
Net periodic benefit cost	$ 2	$ 0
Percentage of gain (loss) corridor	10.00%