Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	$ (149.9)
Balance at the end of the period	(143.4)	$ (149.9)
Foreign Currency Translation
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	(157.0)	(127.9)
Change in period	9.7	(29.1)
Balance at the end of the period	(147.3)	(157.0)
Pension Adjustment
Changes in accumulated other comprehensive income (loss)
Change in period	0.7
Balance at the end of the period	0.7
Cash Flow Hedges
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	7.1	0.6
Change in period	(3.9)	6.5
Balance at the end of the period	3.2	7.1
Accumulated Other Comprehensive Loss.
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	(149.9)	(127.3)
Change in period	6.5	(22.6)
Balance at the end of the period	$ (143.4)	$ (149.9)