Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounts receivable, allowance	$ 2.3	$ 2.4
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	300,156,321	298,320,928
Common stock, shares outstanding (in shares)	279,325,867	278,226,242
Treasury stock, shares (in shares)	20,830,454	20,094,686
Related Party
Accounts receivable, allowance	$ 0.1	$ 0.1