Segment Results (Schedule of Segment Operating Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting [Abstract]
Total consolidated operating income	$ 111.3	$ 100.2	$ 292.4	$ 257.4
Interest expense	10.5	8.8	30.6	26.7
Other non-operating (income), net	(3.0)	(2.3)	(9.3)	(6.9)
Earnings before income taxes	$ 103.8	$ 93.7	$ 271.1	$ 237.6