Revenue and Expense Recognition (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020	Nov. 30, 2020
Revenue from Contract with Customer [Abstract]
Fees, taxes, and charges	$ 213		$ 213
Customer deposits		$ 3,100
Customer deposits, future cruise credits				$ 2,200
Customer deposits, current portion		2,707		$ 1,940
Revenues recognized related to customer deposits at beginning of period		$ 0	$ 3,300