Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Sep. 30, 2023 |
Sep. 30, 2022 |
|
| Accumulated other comprehensive income(loss) | ||||
| Amounts reclassified from accumulated other comprehensive income(loss) | $ 10.8 | $ 0.0 | $ 10.8 | $ 0.0 |
| Gains and Losses on Available-For-Sale Securities | ||||
| Accumulated other comprehensive income(loss) | ||||
| Net current-period other comprehensive income | 4.3 | 5.0 | 11.8 | 23.4 |
| Foreign Currency Items | ||||
| Accumulated other comprehensive income(loss) | ||||
| Net current-period other comprehensive income | $ 3.0 | $ 1.0 | $ 1.7 | $ 10.1 |
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax of reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|