Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jul. 31, 2017	Jan. 31, 2017
Condensed Consolidated Balance Sheets (Unaudited)
Accounts receivable - trade, allowance for doubtful accounts	$ 10.6	$ 13.5
Property and equipment, accumulated depreciation	$ 171.9	$ 149.4
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	53,500,000	53,500,000
Treasury stock	2,100,000	1,500,000