Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 31, 2018	Oct. 31, 2017
Current assets:
Cash and cash equivalents	$ 726,214	$ 640,513
Short-term investments	228,940	279,133
Accounts receivable, net of allowance for doubtful accounts of $17.7 million and $17.6 million as of July 31, 2018 and October 31, 2017, respectively.	728,940	622,183
Inventories	227,885	267,143
Prepaid expenses and other	192,497	197,339
Total current assets	2,104,476	2,006,311
Long-term investments	29,465	49,783
Equipment, building, furniture and fixtures, net	295,863	308,465
Goodwill	287,551	267,458
Other intangible assets, net	108,302	100,997
Deferred tax asset, net	724,087	1,155,104
Other long-term assets	72,951	63,593
Total assets	3,622,695	3,951,711
Current liabilities:
Accounts payable	312,611	260,098
Accrued liabilities and other short-term obligations	297,988	322,934
Deferred revenue	104,170	102,418
Current portion of long-term debt	353,669	352,293
Total current liabilities	1,068,438	1,037,743
Long-term deferred revenue	79,914	82,589
Other long-term obligations	108,884	111,349
Long-term debt, net	586,505	583,688
Total liabilities	1,843,741	1,815,369
Commitments and contingencies (Note 18)
Stockholders’ equity:
Preferred stock – par value $0.01; 20,000,000 shares authorized; zero shares issued and outstanding	0	0
Common stock – par value $0.01; 290,000,000 shares authorized; 143,050,180 and 143,043,227 shares issued and outstanding	1,431	1,430
Additional paid-in capital	6,797,857	6,810,182
Accumulated other comprehensive income (loss)	(8,705)	(11,017)
Accumulated deficit	(5,011,629)	(4,664,253)
Total stockholders’ equity	1,778,954	2,136,342
Total liabilities and stockholders’ equity	$ 3,622,695	$ 3,951,711