Commitments (Details 1) $ in Millions		Aug. 31, 2015 USD ($)
Schedule of Purchase Commitments [Line Items]
2016 (remainder)		$ 1,472
2017		1,504
2018		1,888
2019		1,655
2020		1,661
Thereafter		6,060
Total		14,240
Aircraft And Related Equipment Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2016 (remainder)		657
2017		1,240
2018		1,739
2019		1,584
2020		1,638
Thereafter		5,962
Total		12,820
Other Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2016 (remainder)	[1]	815
2017	[1]	264
2018	[1]	149
2019	[1]	71
2020	[1]	23
Thereafter	[1]	98
Total	[1]	$ 1,420

[1] Primarily equipment, advertising contracts and, for the remainder of 2016, $495 million of estimated required quarterly contributions to our U.S. Pension Plans.