Commitments (Details 3) $ in Millions	Aug. 31, 2015 USD ($)
Schedule of Future Minimum Operating Lease Payments [Line Items]
2016 (remainder)	$ 1,686
2017	2,293
2018	1,804
2019	1,560
2020	1,316
Thereafter	7,714
Total	16,373
Aircraft and Related Equipment [Member]
Schedule of Future Minimum Operating Lease Payments [Line Items]
2016 (remainder)	430
2017	403
2018	332
2019	274
2020	190
Thereafter	360
Total	1,989
Facilities and Other [Member]
Schedule of Future Minimum Operating Lease Payments [Line Items]
2016 (remainder)	1,256
2017	1,890
2018	1,472
2019	1,286
2020	1,126
Thereafter	7,354
Total	$ 14,384