Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2019	Oct. 31, 2018
Current assets:
Cash and cash equivalents	$ 699,148	$ 745,423
Short-term investments	119,327	148,981
Accounts receivable, net of allowance for doubtful accounts of $18.0 million and $17.4 million as of April 30, 2019 and October 31, 2018, respectively.	756,607	786,502
Inventories	359,417	262,751
Prepaid expenses and other	243,669	198,945
Total current assets	2,178,168	2,142,602
Long-term investments	0	58,970
Equipment, building, furniture and fixtures, net	282,022	292,067
Goodwill	297,711	297,968
Other intangible assets, net	129,971	148,225
Deferred tax asset, net	715,968	745,039
Other long-term assets	82,938	71,652
Total assets	3,686,778	3,756,523
Current liabilities:
Accounts payable	366,932	340,582
Accrued liabilities and other short-term obligations	291,417	340,075
Deferred revenue	104,030	111,134
Current portion of long-term debt	7,000	7,000
Debt conversion liability	0	164,212
Total current liabilities	769,379	963,003
Long-term deferred revenue	40,992	58,323
Other long-term obligations	129,779	119,413
Long-term debt, net	683,429	686,450
Total liabilities	1,623,579	1,827,189
Commitments and contingencies (Note 19)
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; 155,566,701 and 154,318,531 shares issued and outstanding	1,556	1,543
Additional paid-in capital	6,892,342	6,881,223
Accumulated other comprehensive loss	(19,206)	(5,780)
Accumulated deficit	(4,811,493)	(4,947,652)
Total stockholders’ equity	2,063,199	1,929,334
Total liabilities and stockholders’ equity	$ 3,686,778	$ 3,756,523