Notes Payable and Long-Term Debt - Schedule of Notes Payable and Long-term Debt (Details) - USD ($)	Nov. 30, 2025	Aug. 31, 2025
Debt Instrument [Line Items]
Total notes payable and long-term debt	$ 2,887,000,000	$ 2,885,000,000
Less current installments of notes payable and long-term debt	500,000,000	499,000,000
Notes payable and long-term debt, less current installments	$ 2,387,000,000	2,386,000,000
Senior Notes | 3.950% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	3.95%
Total notes payable and long-term debt	$ 499,000,000	499,000,000
Senior Notes | 3.600% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	3.60%
Total notes payable and long-term debt	$ 498,000,000	498,000,000
Senior Notes | 3.000% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	3.00%
Total notes payable and long-term debt	$ 595,000,000	595,000,000
Senior Notes | 1.700% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	1.70%
Total notes payable and long-term debt	$ 500,000,000	499,000,000
Senior Notes | 4.250% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	4.25%
Total notes payable and long-term debt	$ 498,000,000	497,000,000
Senior Notes | 5.450% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	5.45%
Total notes payable and long-term debt	$ 297,000,000	297,000,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total notes payable and long-term debt	0	$ 0
Available unused borrowing capacity	4,000,000,000.0
Line of Credit | Revolving Credit Facility | The Revolving Credit Facility
Debt Instrument [Line Items]
Available unused borrowing capacity	3,200,000,000
Line of Credit | Commercial Paper
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,200,000,000