Debt - Long-term Debt Roll Forward (Details) $ in Millions	3 Months Ended
	Nov. 30, 2024 USD ($)
Current Portion Of Long Term Debt [Roll Forward]
Current portion, beginning balance	$ 1,505
Current repayments of long-term debt	(1,447)
Current reclassifications of long-term debt	379
Other, current	8
Current portion, ending balance	446
Noncurrent Portion Of Long Term Debt [Roll Forward]
Non-current portion, beginning balance	8,044
Non-current repayments of long-term debt	0
Non-current reclassifications of long-term debt	(379)
Other, non-current	(54)
Non-current portion, ending balance	7,611
Long Term Debt [Roll Forward]
Long-term debt, beginning balance	9,549
Repayments of long-term debt	(1,447)
Reclassifications of long-term debt	0
Other	(46)
Long-term debt, ending balance	$ 8,056