Short-Term Borrowings and Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	Nov. 30, 2014
Debt Instrument [Line Items]
Total long-term debt including current maturities	$ 10,010	[1]
Less current maturities	0	[1]
Total long term debt	10,010	[1]
Unsecured variable rate notes due 2016 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	750	[1]
1.750% unsecured notes due 2017 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	749	[1]
2.700% unsecured notes due 2019 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	1,248	[1]
2.875% unsecured Pound Sterling notes due 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	624	[1],[2]
3.300% unsecured notes due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	1,247	[1]
3.800% unsecured notes due 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	1,995	[1]
3.600% unsecured Pound Sterling notes due 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	469	[1],[2]
2.125% unsecured Euro notes due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	931	[1],[2]
Spot rate	1.24
4.500% unsecured notes due 2034 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	497	[1]
4.800% unsecured notes due 2044 [Member]
Debt Instrument [Line Items]
Total long-term debt including current maturities	$ 1,500	[1]
Pound Sterling Notes [Member]
Debt Instrument [Line Items]
Spot rate	1.56

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

[2] Pound Sterling denominated debt is translated at the November 30, 2014 spot rate of $1.56/Pound Sterling. Euro denominated debt is translated at the November 30, 2014 spot rate of $1.24/Euro.