Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2025	Nov. 30, 2024	Nov. 30, 2023	Dec. 31, 2025	Jan. 01, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease term (in years)	12 months
Emissions trading scheme, phase-in period					3 years
Cost of prepaid air and other transportation costs	$ 233	$ 219
Customer deposits	7,200	6,800
Revenues recognized related to customer deposits	6,100	5,500
Contract assets	363	336
Selling expenses	$ 972	$ 925	$ 851
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease renewal term (in years)	1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease renewal term (in years)	10 years
Ships
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Average useful lives of property and equipment (in years)	30 years
Residual value of original cost (percent)	15.00%
Salvage value	$ 25
Ships | Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Average useful lives of property and equipment (in years)				35 years
Residual value of original cost (percent)				5.00%