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Commitments (Details 1)
$ in Millions
Nov. 30, 2016
USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]  
2017 (remainder) $ 895
2018 2,240
2019 2,052
2020 2,164
2021 1,614
Thereafter 4,324
Total 13,289
Aircraft And Related Equipment Commitments [Member]  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2017 (remainder) 371
2018 1,767
2019 1,717
2020 1,925
2021 1,460
Thereafter 4,205
Total 11,445
Other Commitments [Member]  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2017 (remainder) 524 [1]
2018 473 [1]
2019 335 [1]
2020 239 [1]
2021 154 [1]
Thereafter 119 [1]
Total $ 1,844 [1]
[1] Primarily equipment and advertising contracts.