Commitments (Details 1) (USD $) In Millions, unless otherwise specified	Feb. 28, 2015
Schedule of Purchase Commitments [Line Items]
2015 (remainder)	$ 595
2016	1,584
2017	1,199
2018	1,500
2019	1,101
Thereafter	4,540
Total	10,519
Aircraft And Related Equipment Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2015 (remainder)	415
2016	1,249
2017	1,013
2018	1,389
2019	1,033
Thereafter	4,429
Total	9,528
Other Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2015 (remainder)	180	[1]
2016	335	[1]
2017	186	[1]
2018	111	[1]
2019	68	[1]
Thereafter	111	[1]
Total	$ 991	[1]

[1] Primarily equipment, advertising contracts and contributions to our U.S. Pension Plans, which are further described in Note 5.