Notes Payable and Long-Term Debt - Schedule of Notes Payable and Long-term Debt (Details) - USD ($)	Nov. 30, 2022	Aug. 31, 2022
Debt Instrument [Line Items]
Total notes payable and long-term debt	$ 2,876,000,000	$ 2,875,000,000
Less current installments of notes payable and long-term debt	300,000,000	300,000,000
Notes payable and long-term debt, less current installments	$ 2,576,000,000	2,575,000,000
Senior Notes | 4.900% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	4.90%
Total notes payable and long-term debt	$ 300,000,000	300,000,000
Senior Notes | 3.950% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	3.95%
Total notes payable and long-term debt	$ 497,000,000	497,000,000
Senior Notes | 3.600% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	3.60%
Total notes payable and long-term debt	$ 496,000,000	496,000,000
Senior Notes | 3.000% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	3.00%
Total notes payable and long-term debt	$ 592,000,000	592,000,000
Senior Notes | 1.700% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	1.70%
Total notes payable and long-term debt	$ 497,000,000	497,000,000
Senior Notes | 4.250% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	4.25%
Total notes payable and long-term debt	$ 494,000,000	493,000,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total notes payable and long-term debt	0	0
Available unused borrowing capacity	3,800,000,000
Line of Credit | Term Loan Facility
Debt Instrument [Line Items]
Total notes payable and long-term debt	0	$ 0
Line of Credit | Commercial Paper
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,200,000,000