Commitments - Schedule of Future Minimum Lease Payments, Operating Leases (Details) $ in Millions	Feb. 28, 2017 USD ($)
Schedule of Future Minimum Operating Lease Payments [Line Items]
2017 (remainder)	$ 617
2018	2,390
2019	2,142
2020	1,856
2021	1,644
Thereafter	9,140
Total	17,789
Aircraft and Related Equipment [Member]
Schedule of Future Minimum Operating Lease Payments [Line Items]
2017 (remainder)	70
2018	398
2019	343
2020	261
2021	203
Thereafter	360
Total	1,635
Facilities and Other [Member]
Schedule of Future Minimum Operating Lease Payments [Line Items]
2017 (remainder)	547
2018	1,992
2019	1,799
2020	1,595
2021	1,441
Thereafter	8,780
Total	$ 16,154