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v3.10.0.1

New Accounting Pronouncements (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) aircraft | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) aircraft | Jun. 30, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Aircraft rentals | $ 40 | $ 53 | $ 80 | $ 107
Aircraft under operating lease | aircraft | 53 |  | 53 |
Net Present Value Aircraft Operating Leases | $ 850 |  | $ 850 |
ASU 2017-07 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | 4 |  | $ 6 |
AOCI Including Portion Attributable to Noncontrolling Interest |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 20 |  |  |
B-717-200 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Aircraft under operating lease | aircraft | 76 |  | 76 |

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