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Shareholders' Equity - Shares Repurchased (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015
Stockholders Equity Note [Line Items] |  |  |
Dollar Amount Paid for Shares Repurchased | $ 552 | $ 2,340 | $ 533
Carnival Corp |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased |  | 0.9 | 5.1
Carnival PLC |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased |  | 0.9 | 5.1
Dollar Amount Paid for Shares Repurchased | $ 0 | $ 0 | $ 0
Repurchase Agreements | Carnival Corp |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased | 3.3 | 47.8 | 5.3
Dollar Amount Paid for Shares Repurchased | $ 223 | $ 2,264 | $ 276
Repurchase Agreements | Carnival PLC |  |  |
Stockholders Equity Note [Line Items] |  |  |
Number of Shares Repurchased | 5.6 | 0.7 | 0.0
Dollar Amount Paid for Shares Repurchased | $ 335 | $ 35 | $ 0

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&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://www.xbrl.org/2003/role/presentationRef -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=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
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