Commitments (Details 1) (USD $) In Millions, unless otherwise specified	Aug. 31, 2014
Schedule of Purchase Commitments [Line Items]
2015 (remainder)	$ 2,001
2016	1,563
2017	1,130
2018	1,435
2019	915
Thereafter	4,563
Total	11,607
Aircraft And Related Equipment Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2015 (remainder)	995
2016	1,244
2017	959
2018	1,341
2019	860
Thereafter	4,461
Total	9,860
Other Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2015 (remainder)	1,006	[1]
2016	319	[1]
2017	171	[1]
2018	94	[1]
2019	55	[1]
Thereafter	102	[1]
Total	$ 1,747	[1]

[1] Primarily equipment, advertising contracts and, for the remainder of 2015, $495 million of quarterly contributions to our U.S. Pension Plans.