Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Revenue:
Total revenue	$ 778,527	$ 646,135
Cost of goods sold:
Total cost of goods sold	455,186	374,370
Gross profit	323,341	271,765
Operating expenses:
Research and development	128,633	118,524
Selling and marketing	98,113	88,515
General and administrative	39,243	38,406
Significant asset impairments and restructuring costs	2,273	5,961
Amortization of intangible assets	5,528	3,623
Acquisition and integration costs	1,608	0
Total operating expenses	275,398	255,029
Income from operations	47,943	16,736
Interest and other income, net	4,253	1,575
Interest expense	(9,441)	(13,734)
Income before income taxes	42,755	4,577
Provision for income taxes	9,139	477,940
Net income (loss)	$ 33,616	$ (473,363)
Basic net income (loss) per common share (in dollars per share)	$ 0.22	$ (3.29)
Diluted net income (loss) per potential common share (in dollars per share)	$ 0.21	$ (3.29)
Weighted average basic common shares outstanding (in shares)	156,314	143,922
Weighted average dilutive potential common shares outstanding (in shares)	158,174	143,922
Products
Revenue:
Total revenue	$ 642,532	$ 525,609
Cost of goods sold:
Total cost of goods sold	380,442	313,120
Services
Revenue:
Total revenue	135,995	120,526
Cost of goods sold:
Total cost of goods sold	$ 74,744	$ 61,250