Commitments and Contingencies - Credit Card Processing Arrangements (Details) - USD ($) |
Mar. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Restricted Cash and Cash Equivalents Items [Line Items] | ||
| Maximum potential exposure to cash holdbacks from credit card processors | $ 600,900,000 | $ 423,700,000 |
| Credit Card Holdbacks | ||
| Restricted Cash and Cash Equivalents Items [Line Items] | ||
| Restricted cash holdbacks | $ 0 | $ 0 |