Summary of Significant Accounting Policies - Contract Costs (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
|
| Contract Costs | |||||
| Impairment losses | $ 0.0 | $ 0.0 | |||
| Incremental costs of obtaining a contract | |||||
| Contract Costs | |||||
| Total unamortized costs | $ 29.2 | 29.2 | $ 22.8 | ||
| Amortization related to contract costs | 2.8 | $ 2.0 | 7.8 | 5.4 | |
| Costs to fulfill a contract | |||||
| Contract Costs | |||||
| Total unamortized costs | 51.4 | 51.4 | $ 43.0 | ||
| Amortization related to contract costs | $ 3.2 | $ 2.3 | $ 8.9 | $ 6.3 | |