Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Oct. 31, 2018	Oct. 31, 2017
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 19.0	$ 10.8
Preferred stock, par value (in usd per share)	$ 0.1	$ 0.1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.1	$ 0.1
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares, issued (in shares)	52,800,000	52,400,000
Treasury stock, shares (in shares)	3,600,000	3,600,000