Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Allowances for accounts receivable	$ 17.5	$ 16.9
Company common shares shares authorized (in shares)	200,000,000	200,000,000
Common shares, shares issued (in shares)	77,457,218	77,090,104
Treasury shares (in shares)	3,326,669	1,715,282
Preferred Class A
Preferred stock, shares authorized (Class I & Class II Preferred stock) (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (Class I & Class II Preferred stock) (in shares)	0	0
Preferred Class B
Preferred stock, shares authorized (Class I & Class II Preferred stock) (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (Class I & Class II Preferred stock) (in shares)	0	0