Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2015	Oct. 31, 2014
Statement of Financial Position [Abstract]
Allowances for trade accounts receivable	$ 44,952	$ 63,991
Fixed assets, accumulated depreciation and amortization	$ 218,333	$ 220,888
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	5,000,000	5,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	285,000,000	285,000,000
Common stock, shares issued (shares)	174,999,722	174,057,410
Treasury stock (shares)	2,885,200	2,885,200