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Shareholders' Equity - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015 | Apr. 06, 2017
Stockholders Equity Note [Line Items] |  |  |  |
Share repurchase program, aggregate value authorized for repurchase |  |  |  | $ 1,000,000,000.0
Net proceeds from sale of treasury stock | $ 0 | $ 40,000,000 | $ 264,000,000 |
Unrecognized pension expenses reclassified out of accumulated other comprehensive (loss) income | 18,000,000 | $ 7,000,000 | $ 13,000,000 |
Carnival Corp |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |
Stock issued during period, shares, treasury stock reissued (in shares) |  | 900,000 | 5,100,000 |
Net proceeds from sale of treasury stock |  | $ 40,000,000 | $ 264,000,000 |
Shares repurchased (in shares) |  | 900,000 | 5,100,000 |
Sales under Stock Swap Programs | $ 0 | $ 0 | $ 0 |
Preferred stock, authorized (in shares) | 40,000,000 |  |  |
Preferred stock, shares issued (in shares) | 0 | 0 |  |
Carnival PLC |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |
Stock issued during period, shares, treasury stock reissued (in shares) |  | 900,000 | 5,100,000 |
Net proceeds from sale of treasury stock |  | $ 40,000,000 | $ 264,000,000 |
Shares repurchased (in shares) |  | 900,000 | 5,100,000 |
Preferred stock, shares issued (in shares) | 0 | 0 |  |
Repurchase Agreements | Carnival Corp |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |
Shares repurchased (in shares) | 3,300,000 | 47,800,000 | 5,300,000 |
Repurchase Agreements | Carnival PLC |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |
Shares repurchased (in shares) | 5,600,000 | 700,000 | 0 |

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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Equity impact of the value of treasury stock (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding. + References Reference 1: 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 Reference 2: 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 3: 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: 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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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