Debt - Long-term Debt Roll Forward (Details) $ in Millions	6 Months Ended
	Feb. 28, 2025 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	1,379
Other, current	(32)
Current portion, ending balance	1,406
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	(1,379)
Other, non-current	(56)
Non-current portion, ending balance	6,609
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	(88)
Long-term debt, ending balance	$ 8,015