Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2018 USD ($)	May 31, 2017 USD ($)	May 31, 2018 USD ($) segment	May 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			4
Revenues	$ 4,357,000	$ 3,945,000	$ 8,589,000	$ 7,736,000
Operating costs and expenses	2,681,000	2,436,000	5,390,000	4,870,000
Selling and administrative	605,000	553,000	1,221,000	1,102,000
Depreciation and amortization	512,000	456,000	1,000,000	896,000
Operating Income	559,000	500,000	978,000	868,000
Operating Segments | NAA
Segment Reporting Information [Line Items]
Revenues	2,836,000	2,663,000	5,519	5,180,000
Operating costs and expenses	1,747,000	1,596,000	3,405	3,152,000
Selling and administrative	338,000	330,000	705,000	663,000
Depreciation and amortization	317,000	301,000	617	591,000
Operating Income	433,000	436,000	793	774,000
Operating Segments | EA
Segment Reporting Information [Line Items]
Revenues	1,449,000	1,212,000	2,952	2,438,000
Operating costs and expenses	888,000	796,000	1,892	1,655,000
Selling and administrative	191,000	161,000	379,000	320,000
Depreciation and amortization	160,000	134,000	316	264,000
Operating Income	210,000	120,000	364	199,000
Operating Segments | Cruise Support
Segment Reporting Information [Line Items]
Revenues	31,000	34,000	63	72,000
Operating costs and expenses	11,000	11,000	43	17,000
Selling and administrative	64,000	56,000	119,000	111,000
Depreciation and amortization	25,000	12,000	48	23,000
Operating Income	(69,000)	(45,000)	(147)	(79,000)
Operating Segments | Tour and Other Segment
Segment Reporting Information [Line Items]
Revenues	42,000	37,000	55	46,000
Operating costs and expenses	36,000	33,000	50	46,000
Selling and administrative	11,000	6,000	17,000	8,000
Depreciation and amortization	10,000	9,000	19	18,000
Operating Income	$ (14,000)	$ (11,000)	$ (31)	$ (26,000)