General - Balance Sheet (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended						84 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2010	Nov. 30, 2008	Nov. 30, 2014	May. 31, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories	$ 349						$ 349	$ 327
Total current assets	1,488						1,488	1,479
Property and equipment, net	32,819						32,819	32,179
Other assets	744						744	665
Total assets	39,448						39,448	38,611
Retained earnings	19,158						19,158	19,041
Total shareholders’ equity	24,204						24,204	23,252
Total liabilities and shareholders' equity	39,448						39,448	$ 38,611
Reclassification of Expense
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories	349						349
Total current assets	1,488						1,488
Property and equipment, net	32,819						32,819
Other assets	744						744
Total assets	39,448						39,448
Retained earnings	19,158						19,158
Total shareholders’ equity	24,204						24,204
Total liabilities and shareholders' equity	$ 39,448						39,448
Cumulative impact of revision, reduction in retained earnings							$ 84
Impact of revision on diluted earnings per share, decrease (in dollars per share)	$ 0.03	$ 0.03	$ 0.02	$ 0	$ 0	$ 0.03	$ 0.11
As Previously Reported | Reclassification of Expense
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories	$ 364						$ 364
Total current assets	1,503						1,503
Property and equipment, net	32,773						32,773
Other assets	859						859
Total assets	39,532						39,532
Retained earnings	19,242						19,242
Total shareholders’ equity	24,288						24,288
Total liabilities and shareholders' equity	39,532						39,532
Adjustment | Reclassification of Expense
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories	(15)						(15)
Total current assets	(15)						(15)
Property and equipment, net	46						46
Other assets	(115)						(115)
Total assets	(84)						(84)
Retained earnings	(84)						(84)
Total shareholders’ equity	(84)						(84)
Total liabilities and shareholders' equity	$ (84)						$ (84)