General - Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other ship operating	$ 734	$ 642	$ 1,332	$ 1,238
Depreciation and amortization	406	410	807	815
Operating income	289	147	554	214
Income before income taxes	226	99	278	80
Net income	$ 222	$ 98	$ 271	$ 78
Earnings per share
Basic (in dollars per share)	$ 0.29	$ 0.13	$ 0.35	$ 0.10
Diluted (in dollars per share)	$ 0.29	$ 0.13	$ 0.35	$ 0.10
Reclassification of Expense
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other ship operating		$ 642		$ 1,238
Depreciation and amortization		410		815
Operating income		147		214
Income before income taxes		99		80
Net income		$ 98		$ 78
Earnings per share
Basic (in dollars per share)		$ 0.13		$ 0.10
Diluted (in dollars per share)		$ 0.13		$ 0.10
As Previously Reported | Reclassification of Expense
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other ship operating		$ 635		$ 1,226
Depreciation and amortization		409		814
Operating income		155		227
Income before income taxes		107		93
Net income		$ 106		$ 91
Earnings per share
Basic (in dollars per share)		$ 0.14		$ 0.12
Diluted (in dollars per share)		$ 0.14		$ 0.12
Adjustment | Reclassification of Expense
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other ship operating		$ 7		$ 12
Depreciation and amortization		1		1
Operating income		(8)		(13)
Income before income taxes		(8)		(13)
Net income		$ (8)		$ (13)
Earnings per share
Basic (in dollars per share)		$ (0.01)		$ (0.02)
Diluted (in dollars per share)		$ (0.01)		$ (0.02)