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Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Foreign Currency Exchange Rate Risks (Details) $ in Millions | 3 Months Ended
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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 |

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