Consolidated and Combined Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 2.3	$ 8.7
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	48,300,000	48,800,000
Common stock, shares outstanding	48,300,000	48,800,000
Treasury stock, shares	0	100,000