Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Foreign Currency Exchange Rate Risks (Details) $ in Millions	3 Months Ended
Feb. 29, 2020 USD ($)	Feb. 28, 2019 USD ($)
Fair Value, Measurement Inputs, Disclosure [Line Items]
Change in foreign currency translation adjustment	$ 25	$ 79
Foreign currency contract commitments	$ 6,400
Iona \| Cash flow hedging
Fair Value, Measurement Inputs, Disclosure [Line Items]
Weighted-Average Forward Rate	0.85
Foreign currency zero cost collars \| Enchanted Princess \| Cash flow hedging
Fair Value, Measurement Inputs, Disclosure [Line Items]
Weighted-Average Floor Rate	1.04
Weighted- Average Ceiling Rate	1.28
Foreign currency zero cost collars \| Mardi Gras \| Cash flow hedging
Fair Value, Measurement Inputs, Disclosure [Line Items]
Weighted-Average Floor Rate	1.05
Weighted- Average Ceiling Rate	1.28
Sterling-denominated
Fair Value, Measurement Inputs, Disclosure [Line Items]
Debt instrument, face amount	$ 852
Change in foreign currency translation adjustment	2
Euro-denominated
Fair Value, Measurement Inputs, Disclosure [Line Items]
Debt instrument, face amount	$ 8,200

Fair Value, Measurement Inputs, Disclosure [Line Items]

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Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
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- Definition

Average cap rate on a group of foreign currency derivatives for example, but not limited to, caps or collars.

+ References

No definition available.

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Average floor rate on a group of foreign currency derivatives for example, but not limited to, floors or collars.

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Average contractual rate at which a foreign currency can be purchased or sold.

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This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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