Fair Value Measurements, Derivative Instruments and Hedging Activities - Derivatives Qualifying and Designated as Hedging Instruments Recognized in Other Comprehensive Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016	Nov. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets	$ 22,000,000		$ 22,000,000		$ 15,000,000
Derivative liabilities	265,000,000		265,000,000		434,000,000
Minimum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, cash collateral netting threshold, fair value	100,000,000		100,000,000
Interest rate swaps – cash flow hedges | Cash flow hedging
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swaps designated as cash flow hedges	511,000,000		511,000,000		500,000,000
Fuel
Derivative Instruments, Gain (Loss) [Line Items]
Collateral required to be posted	0		0		0
Collateral required to be received	0		0		0
Designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets	22,000,000		22,000,000		15,000,000
Derivative liabilities	61,000,000		61,000,000		92,000,000
Designated as hedging instruments | Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	(17,000,000)	$ 0	(33,000,000)	$ (17,000,000)
Designated as hedging instruments | Foreign currency zero cost collars – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	17,000,000	2,000,000	52,000,000	21,000,000
Designated as hedging instruments | Interest rate swaps – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	1,000,000	$ 0	5,000,000	$ 3,000,000
Designated as hedging instruments | Currency swap
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	328,000,000		328,000,000		291,000,000
Not designated as hedging instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	204,000,000		204,000,000		342,000,000
Prepaid expenses and other | Designated as hedging instruments | Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets	3,000,000		3,000,000		12,000,000
Prepaid expenses and other | Designated as hedging instruments | Foreign currency zero cost collars – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets	8,000,000		8,000,000		0
Other assets | Designated as hedging instruments | Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets	0		0		3,000,000
Other assets | Designated as hedging instruments | Foreign currency zero cost collars – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets	11,000,000		11,000,000		0
Accrued liabilities and other | Designated as hedging instruments | Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	13,000,000		13,000,000		26,000,000
Accrued liabilities and other | Designated as hedging instruments | Foreign currency zero cost collars – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	0		0		12,000,000
Accrued liabilities and other | Designated as hedging instruments | Interest rate swaps – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	11,000,000		11,000,000		10,000,000
Accrued liabilities and other | Not designated as hedging instrument | Fuel
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	159,000,000		159,000,000		198,000,000
Other long-term liabilities | Designated as hedging instruments | Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	16,000,000		16,000,000		0
Other long-term liabilities | Designated as hedging instruments | Foreign currency zero cost collars – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	0		0		21,000,000
Other long-term liabilities | Designated as hedging instruments | Interest rate swaps – cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	21,000,000		21,000,000		23,000,000
Other long-term liabilities | Not designated as hedging instrument | Fuel
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	$ 45,000,000		$ 45,000,000		$ 144,000,000