Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Cash flows from operating activities
Net loss	$ (105,250)	$ (173,192)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Amortization of discount on marketable securities	(39)	(25)
Change in fair value of embedded redemption feature	3,160	(3,380)
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	43,514	44,765
Share-based compensation costs	23,656	27,919
Amortization of intangible assets	55,965	76,567
Deferred tax provision (benefit)	(148)	0
Provision for inventory excess and obsolescence	19,071	11,461
Provision for warranty	23,495	10,538
Other	5,441	2,170
Changes in assets and liabilities, net of effect of acquisition:
Accounts receivable	37,223	(72,030)
Inventories	(34,038)	6,331
Prepaid expenses and other	10,890	(4,462)
Accounts payable, accruals and other obligations	35,632	(81,388)
Deferred revenue	(22,071)	22,241
Net cash provided by (used in) operating activities	96,501	(132,485)
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(33,000)	(41,138)
Restricted cash	3,546	(8,727)
Purchase of available for sale securities	0	(49,894)
Proceeds from sale of cost method investment	524	0
Receipt of contingent consideration related to business acquisition	0	16,394
Net cash used in investing activities	(28,930)	(83,365)
Cash flows from financing activities:
Repayment of capital lease obligations	(1,231)	0
Proceeds from issuance of common stock	12,022	13,183
Net cash provided by financing activities	10,791	13,183
Effect of exchange rate changes on cash and cash equivalents	(3,026)	312
Net increase (decrease) in cash and cash equivalents	78,362	(202,667)
Cash and cash equivalents at beginning of period	541,896	688,687
Cash and cash equivalents at end of period	617,232	486,332
Supplemental disclosure of cash flow information
Cash paid during the period for interest	18,978	18,869
Cash paid during the period for income taxes, net	7,807	1,781
Non-cash investing and financing activities
Purchase of equipment in accounts payable	2,686	5,186
Fixed assets acquired under capital leases	$ 6,033	$ 1,268