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Asset-Backed Securitization Program - Securitization Activity (Details) - Asset-Backed Securitization Program - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2023
Feb. 28, 2022
Trade Accounts Receivable Securitization and Sale Program [Line Items]        
Trade accounts receivable sold $ 998 $ 1,000 $ 2,064 $ 2,032
Cash proceeds received 989 999 2,047 2,029
Pre-tax losses on sale of receivables $ 9 $ 1 $ 17 $ 3