Segment Information - Segment Reporting (Details) $ in Millions	3 Months Ended
	Feb. 28, 2019 USD ($) segment	Feb. 28, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Revenues	$ 4,673	$ 4,232
Operating costs and expenses	3,142	2,709
Selling and administrative	629	616
Depreciation and amortization	516	488
Operating Income	386	419
Operating Segments | NAA
Segment Reporting Information [Line Items]
Revenues	3,077	2,684
Operating costs and expenses	2,010	1,658
Selling and administrative	353	367
Depreciation and amortization	328	299
Operating Income	386	360
Operating Segments | EA
Segment Reporting Information [Line Items]
Revenues	1,526	1,503
Operating costs and expenses	1,075	1,005
Selling and administrative	205	188
Depreciation and amortization	152	157
Operating Income	93	154
Operating Segments | Cruise Support
Segment Reporting Information [Line Items]
Revenues	42	32
Operating costs and expenses	27	33
Selling and administrative	65	55
Depreciation and amortization	28	23
Operating Income	(78)	(78)
Operating Segments | Tour and Other
Segment Reporting Information [Line Items]
Revenues	29	13
Operating costs and expenses	29	14
Selling and administrative	6	6
Depreciation and amortization	9	10
Operating Income	$ (15)	$ (17)