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Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Impacts of ASC 606 Adoption (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenues | $ 20,825 | $ 18,881 | $ 17,510
Operating costs and expenses | 17,549 | 15,556 | 14,701
Operating Income | 3,276 | 3,325 | 2,809
Net Income | 2,990 | 3,152 | 2,606
Prepaid expenses and other | 671 | 436 |
Total current assets | 2,059 | 2,225 |
Customer deposits | 4,735 | 4,395 |
Total current liabilities | 9,127 | 9,204 |
Prepaid expenses and other | (254) | 74 | (13)
Customer deposits | 387 | 539 | 361
Net cash provided by operating activities | 5,475 | 5,549 | 5,322
Onboard and other |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenues | 6,331 | $ 4,679 | $ 4,330
Operating costs and expenses | 2,101 |  |
ASC 606 | Prior to adoption of ASC 606 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenues | 19,393 |  |
Operating costs and expenses | 16,117 |  |
Operating Income | 3,276 |  |
Net Income | 2,990 |  |
Prepaid expenses and other | 517 |  |
Total current assets | 1,905 |  |
Customer deposits | 4,581 |  |
Total current liabilities | 8,973 |  |
Prepaid expenses and other | (100) |  |
Customer deposits | 233 |  |
Net cash provided by operating activities | 5,475 |  |
ASC 606 | Prior to adoption of ASC 606 | Onboard and other |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenues | 4,899 |  |
Operating costs and expenses | 669 |  |
ASC 606 | Adjustments |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenues | 1,432 |  |
Operating costs and expenses | 1,432 |  |
Operating Income | 0 |  |
Net Income | 0 |  |
Prepaid expenses and other | 154 |  |
Total current assets | 154 |  |
Customer deposits | 154 |  |
Total current liabilities | 154 |  |
Prepaid expenses and other | (154) |  |
Customer deposits | 154 |  |
Net cash provided by operating activities | 0 |  |
ASC 606 | Adjustments | Onboard and other |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenues | 1,432 |  |
Operating costs and expenses | $ 1,432 |  |

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