Fair Value Measurements, Derivative Instruments and Hedging Activities - Derivatives Qualifying and Designated as Hedging Instruments Recognized in Other Comprehensive Income (Detail)	3 Months Ended
	Feb. 29, 2016 USD ($) counterparty	Feb. 28, 2015 USD ($)	Nov. 30, 2015 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Fuel Derivative, Counterparty | counterparty	1
Fuel
Derivative Instruments, Gain (Loss) [Line Items]
Collateral posted	$ 82,000,000		$ 25,000,000
Collateral required to be received	0		$ 0
Minimum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, cash collateral netting threshold, fair value	100,000,000
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	(13,000,000)	$ 39,000,000
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	10,000,000	(37,000,000)
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	$ (3,000,000)	$ (2,000,000)