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Accumulated Other Comprehensive Income (Loss) - Effect of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) into Net Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue	$ 633,719	$ 615,204	$ 605,005	$ 568,604	$ 587,159	$ 555,805	$ 557,204	$ 542,043	$ 2,422,532	$ 2,242,211	$ 2,057,472
Operating expenses									1,562,175	1,456,825	1,351,870
Other income (expense), net									12,153	15,144	23,425
Reclassifications into net income									(20,692)	(14,882)	3,882
Reclassification out of accumulated other comprehensive income (loss) | Gain (loss) on cash flow hedges, net of taxes
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue									(8,585)	9,270	2,339
Operating expenses									(12,125)	(24,193)	1,543
Reclassification out of accumulated other comprehensive income (loss) | Gain (loss) on available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net									$ 18	$ 41	$ 0

X

- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

+ References

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+ References

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- Definition

Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004921&loc=d3e1436-108581

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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