Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Revenue:
Total revenue	$ 3,572,131	$ 3,094,286	$ 2,801,687
Cost of goods sold:
Total cost of goods sold	2,030,065	1,779,596	1,555,901
Gross profit	1,542,066	1,314,690	1,245,786
Operating expenses:
Research and development	548,139	491,564	475,329
Selling and marketing	423,046	394,060	356,169
General and administrative	174,399	160,133	142,604
Amortization of intangible assets	21,808	15,737	33,029
Acquisition and integration costs	3,370	5,111	0
Significant asset impairments and restructuring costs	24,538	18,139	23,933
Total operating expenses	1,195,300	1,084,744	1,031,064
Income from operations	346,766	229,946	214,722
Interest and other income (loss), net	3,876	(12,029)	913
Interest expense	(37,452)	(55,249)	(55,852)
Loss on extinguishment and modification of debt	0	(13,887)	(3,657)
Income before income taxes	313,190	148,781	156,126
Provision (benefit) for income taxes	59,756	493,471	(1,105,827)
Net income (loss)	$ 253,434	$ (344,690)	$ 1,261,953
Basic net income (loss) per common share (in dollars per share)	$ 1.63	$ (2.40)	$ 8.89
Diluted net income (loss) per potential common share (in dollars per share)	$ 1.61	$ (2.49)	$ 7.53
Weighted average basic common shares outstanding (in shares)	155,720	143,738	141,997
Weighted average diluted potential common shares outstanding (in shares)	157,612	143,738	169,919
Products
Revenue:
Total revenue	$ 2,983,815	$ 2,565,460	$ 2,318,581
Cost of goods sold:
Total cost of goods sold	1,716,358	1,507,157	1,308,295
Services
Revenue:
Total revenue	588,316	528,826	483,106
Cost of goods sold:
Total cost of goods sold	$ 313,707	$ 272,439	$ 247,606