Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Condensed Consolidated Balance Sheets [Abstract]
Trade receivables, allowances	$ 14.2	$ 13.6
Intangible assets, accumulated amortization	$ 43.1	$ 38.0
Common stock, stated value per share	$ 20.00	$ 20.00
Authorized	50,000,000	50,000,000
Issued to voting trustees	27,199,232	26,614,542
Issued to shareholders	5,609,605	5,518,543
In treasury, at cost	(340,774)	(69,174)
Outstanding Common Stock	32,468,063	32,063,911