Trade Accounts Receivable Securitization and Sale Programs (Trade Accounts Receivable Sale Programs Key Terms) (Details)	3 Months Ended
	Nov. 30, 2019 CNY (¥)	Dec. 05, 2019 USD ($)	Dec. 05, 2019 CHF (SFr)	Nov. 30, 2019 USD ($)
A
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount				$ 800,000,000.0
Notice period to cancel receivable sale agreements	15 days
B
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount				150,000,000.0
Notice period to cancel receivable sale agreements	10 days
Automatic extension period	1 year
C
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount | ¥	¥ 800,000,000.0
D
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount				150,000,000.0
Notice period to cancel receivable sale agreements	30 days
E
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount				50,000,000.0
F
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
G
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount				50,000,000.0
Notice period to cancel receivable sale agreements	15 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				100,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
One Hundred Fifty Million Dollar Trade Accounts Receivable Sale Program Expiring February 25, 2020 [Member]
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount				740,000,000.0
K
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount				$ 110,000,000.0
Threshold period to cancel trade accounts receivable sale agreement before automatic extension	30 days
New Trade Accounts Receivable Sale Programs | Subsequent Event
Trade Accounts Receivable Securitization and Sale Program [Line Items]
Maximum Amount		$ 500,000,000.0	SFr 100,000,000.0