CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 24.6	$ 18.8
Preferred Stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized (in shares)	13,300,000	13,300,000
Preferred Stock, shares issued (in shares)	0	0
Preferred Stock, shares outstanding (in shares)	0	0
Common Stock, par value (in USD per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in shares)	133,300,000	133,300,000
Common Stock, shares issued (in shares)	31,800,000	31,500,000
Common Stock, shares outstanding (in shares)	29,100,000	28,800,000
Treasury Stock, shares (in shares)	2,700,000	2,700,000