Shareholder's Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	1 Months Ended		3 Months Ended			6 Months Ended
	Jun. 26, 2016	Jun. 24, 2016	May 31, 2016	Feb. 29, 2016	May 31, 2015	May 31, 2016	May 31, 2015	Jun. 27, 2016
Equity, Class of Treasury Stock [Line Items]
Purchases of treasury stock						$ 1,401	$ 0
Sales of treasury stock						$ 40	$ 0
Dividends Declared Per Share (in dollars per share)			$ 0.35		$ 0.25	$ 0.65	$ 0.5
Dividends for common stock paid			$ 39
Common Stock
Equity, Class of Treasury Stock [Line Items]
Increase in dividend rate (as a percent)			17.00%
Dividends Declared Per Share (in dollars per share)			$ 0.35	$ 0.30
Ordinary Shares
Equity, Class of Treasury Stock [Line Items]
Increase in dividend rate (as a percent)			17.00%
Dividends Declared Per Share (in dollars per share)			$ 0.35	$ 0.30
Carnival Corp
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)						28,200
Purchases of treasury stock						$ 1,400
Carnival Corp
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)						891
Treasury stock sold (in shares)						891
Sales of treasury stock						$ 40
Subsequent Event | Carnival Corp
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)	4,500
Purchases of treasury stock		$ 214
Stock Repurchase Program, Authorized Amount, Increase								$ 1,000
Remaining number of shares available under the Repurchase Program (in shares)								$ 1,100