Trade Accounts Receivable Sale Programs (Sales Programs Key Terms) (Details) - 12 months ended Aug. 31, 2020	USD ($)	CNY (¥)	CHF (SFr)
A
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 600,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
B
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 150,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	10 days
Program, extension period	1 year
C
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount | ¥		¥ 400,000,000.0
D
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 150,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
E
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 150,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
F
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 50,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	15 days
G
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 100,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
H
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 100,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
I
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 650,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
J
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount	$ 135,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
K
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum amount | SFr			SFr 100,000,000.0