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Debt (Tables) | 6 Months Ended
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Jun. 30, 2018
Debt Disclosure [Abstract] |
Details of Pass Through Trusts | Certain details of the pass-through trusts with proceeds received from issuance of debt in 2018 are as follows (in millions, except stated interest rate):
EETC Date |  | Class |  | Principal |  | Final expected distribution date |  | Stated interest rate |  | Total proceeds received from issuance of debt during 2018 and recorded as debt as of June 30, 2018 |
February 2018 |  | AA |  | $ | 677 |  |  | March 2030 |  | 3.50% |  | $ | 677 |  |
February 2018 |  | A |  | 258 |  |  | March 2030 |  | 3.70% |  | 258 |  |
May 2018 |  | B |  | 226 |  |  | March 2026 |  | 4.60% |  | 226 |  |
|  |  |  | $ | 1,161 |  |  |  |  |  |  | $ | 1,161 |  |
Contractual Principal Payments | The table below presents the Company's contractual principal payments (not including debt discount or debt issuance costs) at June 30, 2018 under then-outstanding long-term debt agreements (in millions):
Last six months of 2018 |  | $ | 394 |
2019 |  | 1,244 |
2020 |  | 1,242 |
2021 |  | 1,230 |
2022 |  | 1,565 |
After 2022 |  | 7,838 |
|  | $ | 13,513 |

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- References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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