Debt - Narrative (Details) |
1 Months Ended | 5 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
|
Feb. 28, 2019
USD ($)
lender
|
Jun. 30, 2019
USD ($)
|
Dec. 31, 2019
USD ($)
numberOfAircraft
|
Oct. 31, 2019
USD ($)
|
|
| 2019 unsecured notes | Unsecured Debt | ||||
| Debt Instrument [Line Items] | ||||
| Debt instrument face amount | $ 1,500,000,000 | |||
| 2019 unsecured notes at 2.9% due 2024 | Unsecured Debt | ||||
| Debt Instrument [Line Items] | ||||
| Debt instrument face amount | $ 900,000,000 | |||
| Interest rate (percent) | 2.90% | |||
| 2019 unsecured notes at 3.75% due 2029 | Unsecured Debt | ||||
| Debt Instrument [Line Items] | ||||
| Debt instrument face amount | $ 600,000,000 | |||
| Interest rate (percent) | 3.75% | |||
| Pass Through Certificates Series 2019-1 | Secured Debt | ||||
| Debt Instrument [Line Items] | ||||
| Debt instrument face amount | $ 500,000,000 | |||
| Number of aircraft used to secure loans | numberOfAircraft | 14 | |||
| 2019 unsecured term loan | Term Loan | ||||
| Debt Instrument [Line Items] | ||||
| Debt instrument face amount | $ 1,000,000,000 | |||
| Number of lenders | lender | 2 | |||
| Repayment of debt | $ 1,000,000,000 |