Segment Information (Details) $ in Millions	3 Months Ended
	Feb. 28, 2018 USD ($) segment	Feb. 28, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Revenues	$ 4,232	$ 3,791
Operating costs and expenses	2,709	2,435
Selling and administrative	616	549
Depreciation and amortization	488	439
Operating Income	419	368
Operating Segments | NAA
Segment Reporting Information [Line Items]
Revenues	2,684	2,517
Operating costs and expenses	1,658	1,557
Selling and administrative	367	333
Depreciation and amortization	299	289
Operating Income	360	338
Operating Segments | EA
Segment Reporting Information [Line Items]
Revenues	1,503	1,226
Operating costs and expenses	1,005	859
Selling and administrative	188	159
Depreciation and amortization	157	130
Operating Income	154	78
Operating Segments | Cruise Support
Segment Reporting Information [Line Items]
Revenues	32	39
Operating costs and expenses	33	6
Selling and administrative	55	55
Depreciation and amortization	23	11
Operating Income	(78)	(33)
Operating Segments | Tour and Other Segment
Segment Reporting Information [Line Items]
Revenues	13	9
Operating costs and expenses	14	13
Selling and administrative	6	2
Depreciation and amortization	10	9
Operating Income	(17)	(15)
Intersegment Elimination
Segment Reporting Information [Line Items]
Revenues	0	0
Operating costs and expenses	0	0
Selling and administrative	0	0
Depreciation and amortization	0	0
Operating Income	$ 0	$ 0