Commitments (Details 1) (USD $) In Millions, unless otherwise specified	Aug. 31, 2013
Schedule of Purchase Commitments [Line Items]
2014 (remainder)	$ 1,698
2015	1,303
2016	1,207
2017	991
2018	1,519
Thereafter	5,320
Total	12,038
Aircraft And Related Equipment Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2014 (remainder)	828
2015	1,121
2016	1,083
2017	891
2018	1,475
Thereafter	5,211
Total	10,609
Other Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2014 (remainder)	870	[1]
2015	182	[1]
2016	124	[1]
2017	100	[1]
2018	44	[1]
Thereafter	109	[1]
Total	$ 1,429	[1]

[1] Primarily vehicles, facilities, advertising contracts, and for the remainder of 2014, a total of $495 million of quarterly contributions to our U.S. Pension Plans.