Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 129,263	$ 111,708	$ 133,321
Core/developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	78,820	65,916	85,331
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	37,395	27,340	24,594
Contract rights intangible
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	4,906	10,886	16,543
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	4,543	3,580	3,156
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 3,599	$ 3,986	$ 3,697