General Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
May 31, 2013	May 31, 2012	May 31, 2013	May 31, 2012
General Additional Information [Abstract]
Change In Accounting Principle	$ 116	$ 110	$ 255	$ 237
Cost of Property Repairs and Maintenance	$ 239	$ 196	$ 464	$ 432

The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Name:	us-gaap_CostOfPropertyRepairsAndMaintenance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration