Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Current assets:
Cash and cash equivalents	$ 648,867	$ 640,513
Short-term investments	278,743	279,133
Accounts receivable, net of allowance for doubtful accounts of $17.6 million as of January 31, 2018 and October 31, 2017, respectively.	553,724	622,183
Inventories	255,251	267,143
Prepaid expenses and other	186,837	197,339
Total current assets	1,923,422	2,006,311
Long-term investments	59,151	49,783
Equipment, building, furniture and fixtures, net	318,835	308,465
Goodwill	267,899	267,458
Other intangible assets, net	96,485	100,997
Deferred tax asset, net	739,446	1,155,104
Other long-term assets	64,146	63,593
Total assets	3,469,384	3,951,711
Current liabilities:
Accounts payable	209,243	260,098
Accrued liabilities and other short-term obligations	268,164	322,934
Deferred revenue	103,216	102,418
Current portion of long-term debt	352,753	352,293
Total current liabilities	933,376	1,037,743
Long-term deferred revenue	79,297	82,589
Other long-term obligations	115,970	111,349
Long-term debt, net	584,601	583,688
Total liabilities	1,713,244	1,815,369
Commitments and contingencies (Note 17)
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; 144,180,782 and 143,043,227 shares issued and outstanding	1,442	1,430
Additional paid-in capital	6,828,648	6,810,182
Accumulated other comprehensive income (loss)	2,375	(11,017)
Accumulated deficit	(5,076,325)	(4,664,253)
Total stockholders’ equity	1,756,140	2,136,342
Total liabilities and stockholders’ equity	$ 3,469,384	$ 3,951,711