Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Other assets related to assets held for sale	$ 73.8	$ 3.8
Common stock, par value	$ 0.625
Common stock, shares authorized	120,000,000
Common stock, shares issued	68,534,447	68,254,574
Common stock, shares outstanding	35,313,199	35,421,617
Treasury stock, shares outstanding	33,221,248	32,832,957