Commitments - Schedule of Purchase Commitments (Details) $ in Millions	Nov. 30, 2019 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
2020 (remainder)	$ 1,067
2021	3,341
2022	3,125
2023	2,166
2024	929
Thereafter	3,994
Total	14,622
Aircraft And Related Equipment Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2020 (remainder)	556
2021	2,592
2022	2,596
2023	1,789
2024	701
Thereafter	3,408
Total	11,642
Other Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2020 (remainder)	511	[1]
2021	749	[1]
2022	529	[1]
2023	377	[1]
2024	228	[1]
Thereafter	586	[1]
Total	$ 2,980	[1]

[1] ^{Primarily equipment and advertising contracts.}