Investments - Equity Method Investments (Details) - USD ($) |
Sep. 30, 2020 |
Jun. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|---|
| Virgin Atlantic | |||
| Equity Method Investments | |||
| Ownership interest (percent) | 49.00% | 49.00% | |
| Carrying value | $ 0 | $ 0 | $ 375,000,000 |
| Unifi | |||
| Equity Method Investments | |||
| Ownership interest (percent) | 49.00% | 49.00% | |
| Carrying value | $ 147,000,000 | $ 142,000,000 |