Foreign Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Foreign operations data
Revenues	$ 1,410.9	$ 1,273.0	$ 1,257.4
Foreign Operations (Textual) [Abstract]
Maximum percentage of consolidated revenues derive from any individual foreign country	10.00%
Percentage of company's identifiable assets	10.00%
Identifiable assets	$ 11,326.0	10,072.0	9,541.7
Foreign [Member]
Foreign operations data
Revenues	548.1	466.9	468.5
Foreign Operations (Textual) [Abstract]
Identifiable assets	4,718.5	3,910.2	3,783.3
United States [Member]
Foreign operations data
Revenues	862.8	806.1	788.9
Foreign Operations (Textual) [Abstract]
Identifiable assets	$ 6,607.5	$ 6,161.8	$ 5,758.4