Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - Foreign Currency Items - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated other comprehensive income(loss)
Other comprehensive loss before reclassifications	$ 7.1	$ 3.1	$ 4.9	$ 4.7
Net current-period other comprehensive income		$ 2.2		$ 7.5

Amount before tax and reclassification adjustments of other comprehensive income (loss).

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