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Fair Value Measurements, Derivative Instruments and Hedging Activities - Derivatives Qualifying and Designated as Hedging Instruments Recognized in Other Comprehensive Income (Details) | 3 Months Ended | 9 Months Ended |
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Aug. 31, 2016 USD ($) counterparty | Aug. 31, 2015 USD ($) | Aug. 31, 2016 USD ($) counterparty | Aug. 31, 2015 USD ($) | Nov. 30, 2015 USD ($) counterparty
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Fuel Derivative, Counterparty | counterparty | 1 |  | 1 |  | 1
Fuel |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Collateral posted | $ 3,000,000 |  | $ 3,000,000 |  | $ 25,000,000
Collateral required to be received | 0 |  | 0 |  | $ 0
Minimum |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative asset, cash collateral netting threshold, fair value | 100,000,000 |  | 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 | 0 | $ (13,000,000) | (17,000,000) | $ 33,000,000 |
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 | 2,000,000 | 9,000,000 | 21,000,000 | (39,000,000) |
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 | $ 0 | $ 5,000,000 | $ 3,000,000 | $ 8,000,000 |

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- Definition Interest-bearing, non-restricted cash to be posted or received as collateral to the extent the fuel derivative fair value payable to or receivable from an individual counterparty, respectively, exceeds the contractual threshold. + References No definition available. + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624258-113959 + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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