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Shareholders' Equity - Additional Information (Details) - USD ($) |  | 2 Months Ended | 3 Months Ended | 11 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 20, 2016 | Jan. 19, 2017 | Nov. 30, 2016 | Oct. 20, 2016 | Nov. 30, 2016 | Nov. 30, 2015 | Nov. 30, 2014 | Jan. 31, 2017 | Jun. 27, 2016 | Feb. 29, 2016 | Jan. 28, 2016
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share repurchase program, aggregate value authorized for repurchase |  |  |  |  |  |  |  |  | $ 1,000,000,000 |  | $ 1,000,000,000
Dollar Amount Paid for Shares Repurchased |  |  |  |  | $ 2,340,000,000 | $ 533,000,000 | $ 0 |  |  |  |
Sales of treasury stock |  |  |  |  | 40,000,000 | 264,000,000 | $ 0 |  |  |  |
Unrecognized pension expenses reclassified out of accumulated other comprehensive (loss) income |  |  |  |  | $ 7,000,000 | $ 13,000,000 |  |  |  |  |
Dividends declared per share (USD per share) |  |  |  |  | $ 1.35 | $ 1.1 | $ 1.00 |  |  |  |
Carnival Corp |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Preferred stock, authorized |  |  | 40,000,000 |  | 40,000,000 |  |  |  |  |  |
Preferred stock, shares issued |  |  | 0 |  | 0 | 0 |  |  |  |  |
Number of Shares Repurchased |  |  |  |  | 900,000 | 5,100,000 |  |  |  |  |
Share repurchase program additional authorized shares for repurchase |  |  |  |  |  |  |  |  |  | 26,900,000 |
Stock Issued During Period, Shares, Treasury Stock Reissued |  |  |  |  | 900,000 | 5,100,000 |  |  |  |  |
Sales of treasury stock |  |  |  |  | $ 40,000,000 |  |  |  |  |  |
Dividend rate, percentage increase |  |  |  |  | 17.00% |  |  |  |  |  |
Dividends declared per share (USD per share) | $ 0.35 |  |  | $ 0.30 |  |  |  |  |  |  |
Dividends, common stock |  |  | $ 254,000,000 |  |  |  |  |  |  |  |
CARNIVAL PLC |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share repuchase program, number of shares authorized to be repurchased |  |  | 21,500,000 |  | 21,500,000 |  |  |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued |  |  |  |  |  |  | 0 |  |  |  |
Sales of treasury stock |  |  |  |  |  | $ 264,000,000 |  |  |  |  |
Dividend rate, percentage increase |  |  |  |  | 17.00% |  |  |  |  |  |
Dividends declared per share (USD per share) | $ 0.35 |  |  | $ 0.30 |  |  |  |  |  |  |
Dividends, common stock |  |  | $ 254,000,000 |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, remaining authorized amount |  | $ 400,000,000 |  |  |  |  |  |  |  |  |
Subsequent Event | Carnival Corp |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, remaining authorized shares |  | 26,000,000 |  |  |  |  |  |  |  |  |
Subsequent Event | CARNIVAL PLC |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share repurchase program additional authorized shares for repurchase |  |  |  |  |  |  |  | 22,000,000 |  |  |
Stock repurchase program, remaining authorized shares |  | 22,000,000 |  |  |  |  |  |  |  |  |
Repurchase Agreements [Member] | Carnival Corp |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Shares Repurchased |  |  |  |  | 47,800,000 | 5,300,000 |  |  |  |  |
Dollar Amount Paid for Shares Repurchased |  |  |  |  | $ 2,264,000,000 | $ 276,000,000 |  |  |  |  |
Repurchase Agreements [Member] | CARNIVAL PLC |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Shares Repurchased |  |  |  |  | 700,000 | 0 |  |  |  |  |
Dollar Amount Paid for Shares Repurchased |  |  |  |  | $ 35,000,000 | $ 0 |  |  |  |  |
Repurchase Agreements [Member] | Subsequent Event | CARNIVAL PLC |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Shares Repurchased |  | 0 |  |  |  |  |  |  |  |  |
Dollar Amount Paid for Shares Repurchased |  | $ 10,000,000 |  |  |  |  |  |  |  |  |
Stock repurchase program, remaining authorized shares |  | 20,600,000 |  |  |  |  |  |  |  |  |
Payroll and Related Expenses |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unrecognized pension expenses reclassified out of accumulated other comprehensive (loss) income |  |  |  |  | 4,000,000 | 8,000,000 |  |  |  |  |
General and Administrative Expense |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unrecognized pension expenses reclassified out of accumulated other comprehensive (loss) income |  |  |  |  | $ 3,000,000 | $ 5,000,000 |  |  |  |  |

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