Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets held for sale	$ 0.8	$ 40.0
Common stock, par value	$ 0.625	$ 0.625
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	68,797,027	68,575,974
Treasury stock, shares outstanding	33,332,186	33,307,666
Common stock, shares outstanding	35,464,841	35,268,308
Total	$ 286.6	$ 271.4
Treasury Stock, Common, Shares	33,332,186	33,307,666