Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Estimated Fair Values of Derivative Financial Instruments and Location on Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Aug. 31, 2018	Nov. 30, 2017
Derivatives, Fair Value [Line Items]
Derivative assets	$ 5	$ 15
Derivative liabilities	40	161
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative assets	5	15
Derivative liabilities	35	57
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative liabilities	6	104
Net investment hedges | Derivatives designated as hedging instruments | Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Derivative assets	5	3
Net investment hedges | Derivatives designated as hedging instruments | Accrued liabilities and other
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	13
Net investment hedges | Derivatives designated as hedging instruments | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	13	17
Foreign currency zero cost collars | Derivatives designated as hedging instruments | Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Derivative assets	0	12
Interest rate swaps | Derivatives designated as hedging instruments | Accrued liabilities and other
Derivatives, Fair Value [Line Items]
Derivative liabilities	8	10
Interest rate swaps | Derivatives designated as hedging instruments | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	13	17
Interest rate swaps | Cash flow hedging
Derivatives, Fair Value [Line Items]
Interest rate cash flow hedge asset at fair value	422	479
Fuel | Derivatives not designated as hedging instruments | Accrued liabilities and other
Derivatives, Fair Value [Line Items]
Derivative liabilities	6	95
Fuel | Derivatives not designated as hedging instruments | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities		9
Currency swap | Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 160	$ 324