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Shareholders' Equity - Shares Repurchased (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Nov. 30, 2020 | Nov. 30, 2019 | Nov. 30, 2018
Stockholders Equity Note [Line Items] |  |  |
Dollar Amount Paid for Shares Repurchased | $ 12 | $ 603 | $ 1,468
Repurchase Agreements | Carnival Corp |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased | 0.0 | 0.6 | 7.8
Dollar Amount Paid for Shares Repurchased | $ 0 | $ 26 | $ 476
Repurchase Agreements | Carnival PLC |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased | 0.2 | 12.2 | 16.3
Dollar Amount Paid for Shares Repurchased | $ 10 | $ 569 | $ 985

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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