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Shareholders' Equity - Shares Repurchased (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2017
Stockholders Equity Note [Line Items] |  |  |
Dollar Amount Paid for Shares Repurchased | $ 603 | $ 1,468 | $ 552
Repurchase Agreements | Carnival Corp |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased | 0.6 | 7.8 | 3.3
Dollar Amount Paid for Shares Repurchased | $ 26 | $ 476 | $ 223
Repurchase Agreements | Carnival PLC |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased | 12.2 | 16.3 | 5.6
Dollar Amount Paid for Shares Repurchased | $ 569 | $ 985 | $ 335

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