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Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
shares in Millions
Aug. 31, 2018
Nov. 30, 2017
Common Stock    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 1,960 1,960
Common stock, shares issued (in shares) 656 655
Treasury stock, shares (in shares) 129 122
CARNIVAL PLC | Ordinary Shares    
Common stock, par value (in dollars per share) $ 1.66 $ 1.66
Common stock, shares issued (in shares) 217 217
Treasury stock, shares (in shares) 44 32