Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2016	Oct. 31, 2015
Current assets:
Cash and cash equivalents	$ 1,427,643	$ 1,440,882
Accounts receivable, net of allowances for doubtful accounts of $1,739 and $1,838 as of April 30, 2016, and October 31, 2015, respectively	204,915	235,883
Inventories	39,521	40,524
Deferred tax assets	0	78,675
Prepaid expenses and other current assets	67,598	56,235
Total current assets	1,739,677	1,852,199
Property and equipment, net	441,717	439,224
Goodwill	1,621,691	1,617,161
Intangible assets, net	69,611	75,623
Non-current deferred tax assets	69,309	813
Other assets	50,968	51,133
Total assets	3,992,973	4,036,153
Current liabilities:
Accounts payable	97,498	98,143
Accrued employee compensation	133,511	142,075
Deferred revenue	230,540	244,622
Other accrued liabilities	68,757	77,524
Total current liabilities	530,306	562,364
Long-term debt, net of current portion	802,482	793,779
Non-current deferred revenue	74,434	72,065
Non-current income tax liability	62,110	47,010
Non-current deferred tax liabilities	0	24,024
Other non-current liabilities	2,499	3,376
Total liabilities	$ 1,471,831	$ 1,502,618
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized, no shares issued and outstanding	$ 0	$ 0
Common stock, $0.001 par value, 800,000 shares authorized:
Issued and outstanding: 399,383 and 413,923 shares as of April 30, 2016, and October 31, 2015, respectively	399	414
Additional paid-in capital	1,519,439	1,632,984
Accumulated other comprehensive loss	(24,121)	(25,002)
Retained earnings	1,025,425	925,139
Total stockholders’ equity	2,521,142	2,533,535
Total liabilities and stockholders’ equity	$ 3,992,973	$ 4,036,153