Discontinued Operations - Narrative (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2019 |
May 31, 2018 |
|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Shares converted | 0.10 | |
| Spirit MTA REIT | Spinoff | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Cash inflows from continuing involvement subsequent to spin-off | $ 22.7 | |
| Cash outflows from continuing involvement subsequent to spin-off | $ 22.7 |