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Cost-Reduction Actions - Liabilities and Expected Future Payments Related to Work-Force Reduction Actions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Reserve [Roll Forward]
Additional provisions	$ 0.6	$ 3.5	$ 6.9	$ 0.7
Work-force Reductions
Restructuring Reserve [Roll Forward]
Balance at beginning of period			9.4
Additional provisions			9.7
Payments			(4.4)
Changes in estimates			(3.8)
Translation adjustments			(0.1)
Balance at end of period	10.8		10.8
Short-term	10.8		10.8
Work-force Reductions \| U.S.
Restructuring Reserve [Roll Forward]
Balance at beginning of period			2.5
Additional provisions			3.1
Payments			(0.9)
Changes in estimates			(0.1)
Translation adjustments			0.0
Balance at end of period	4.6		4.6
Short-term	4.6		4.6
Work-force Reductions \| International
Restructuring Reserve [Roll Forward]
Balance at beginning of period			6.9
Additional provisions			6.6
Payments			(3.5)
Changes in estimates			(3.7)
Translation adjustments			(0.1)
Balance at end of period	6.2		6.2
Short-term	$ 6.2		$ 6.2