XML 72 R41.htm IDEA: XBRL DOCUMENT v3.8.0.1
Commitments - Schedule of Purchase Commitments (Details)
$ in Millions
Feb. 28, 2018
USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]  
2018 (remainder) $ 770
2019 2,514
2020 2,552
2021 1,644
2022 1,615
Thereafter 3,822
Total 12,917
Aircraft And Related Equipment Commitments [Member]  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2018 (remainder) 516
2019 1,789
2020 1,931
2021 1,244
2022 1,364
Thereafter 3,314
Total 10,158
Other Commitments [Member]  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2018 (remainder) 254 [1]
2019 725 [1]
2020 621 [1]
2021 400 [1]
2022 251 [1]
Thereafter 508 [1]
Total $ 2,759 [1]
[1] Primarily equipment and advertising contracts.