Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Accumulated other comprehensive income(loss) | |||
| Amounts reclassified from accumulated other comprehensive income(loss) | $ 12.8 | $ 0.0 | $ 0.0 |
| Gains and Losses on Available-For-Sale Securities | |||
| Accumulated other comprehensive income(loss) | |||
| Net current-period other comprehensive income | 9.9 | 20.0 | 2.7 |
| Foreign Currency Items | |||
| Accumulated other comprehensive income(loss) | |||
| Net current-period other comprehensive income | $ 3.5 | $ 4.5 | $ 1.3 |
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- 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.
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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before tax of reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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