Short-Term Borrowings and Long-Term Debt, Short-Term Borrowings (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 28, 2015		Feb. 28, 2015		Aug. 31, 2014		Feb. 28, 2014
Short-Term Borrowings [Abstract]
Current maturities of loans assumed through the purchase of land and buildings	$ (2)	[1]	$ (2)	[1]	$ (8)	[1]
Other	1,061		1,061		774
Minimum interest rate (in hundredths)	5.00%	[1]
Maximum interest rate (in hundredths)	8.75%	[1]
Maturity year start	2015	[1]
Maturity year end	2035	[1]
Other Short-Term Debt [Member]
Short-Term Borrowings [Abstract]
Other	309	[1],[2]	309	[1],[2]	16	[1],[2]		[1],[2]
Total short-term borrowings	1,061	[1]	1,061	[1]	774	[1]		[1]
Notes Due 2015 [Member]
Short-Term Borrowings [Abstract]
1.000% unsecured notes due 2015	750	[1]	750	[1]	750	[1]
Stated interest rate (in hundredths)	1.00%	[1]	1.00%	[1]
Maturity year			2015	[1]	2015	[1]
Assumed Loans [Member]
Short-Term Borrowings [Abstract]
Current maturities of loans assumed through the purchase of land and buildings	$ 2	[1]	$ 2	[1]	$ 8	[1]

[1] All notes are presented net of unamortized discount, where applicable.

[2] Other short-term borrowings represent a mix of fixed and variable rate borrowings with various maturities and working capital facilities denominated in various foreign currencies including $29 million of U.S. dollar equivalent bank overdrafts.