Intangible Assets and Goodwill - Summary of Goodwill by Segment (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Apr. 30, 2014	Oct. 31, 2013	Oct. 31, 2012
Goodwill [Line Items]
Gross goodwill	$ 407,875	$ 407,279	$ 402,712
Accumulated impairment losses	(142,310)	(129,545)	(129,545)
Net goodwill	265,565	277,734	273,167
Foreign currency translation and other	596	4,567
Americas [Member]
Goodwill [Line Items]
Gross goodwill	74,553	74,943	75,974
Accumulated impairment losses	0	0	0
Net goodwill	74,553	74,943	75,974
Foreign currency translation and other	(390)	(1,031)
EMEA [Member]
Goodwill [Line Items]
Gross goodwill	197,570	196,584	190,986
Accumulated impairment losses	(12,765)	0	0
Net goodwill	184,805	196,584	190,986
Foreign currency translation and other	986	5,598
APAC [Member]
Goodwill [Line Items]
Gross goodwill	135,752	135,752	135,752
Accumulated impairment losses	(129,545)	(129,545)	(129,545)
Net goodwill	6,207	6,207	6,207
Foreign currency translation and other	$ 0	$ 0