Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Cash flows from operating activities:
Net loss	$ (144,021)	$ (195,521)	$ (333,514)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Gain on extinguishment of debt	0	0	(4,948)
Gain on cost method investments	0	(7,249)	0
Change in fair value of embedded redemption feature	6,600	(2,800)	(2,510)
Change in fair value of contingent consideration	0	0	(13,807)
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	59,099	60,154	42,789
Share-based compensation costs	32,394	37,930	35,560
Amortization of intangible assets	74,497	95,927	127,018
Provision for inventory excess and obsolescence	23,438	17,334	13,696
Provision for warranty	33,418	18,451	15,353
Other	7,122	5,541	3,570
Changes in assets and liabilities, net of effect of acquisition:
Accounts receivable	70,366	(75,623)	(218,196)
Inventories	(53,460)	14,209	(40,957)
Prepaid expenses and other	1,748	(18,302)	(34,908)
Accounts payable, accruals and other obligations	12,610	(59,285)	180,814
Deferred revenue	(16,722)	18,749	1,030
Net cash provided by (used in) operating activities	107,089	(90,485)	(229,010)
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(48,098)	(52,367)	(51,207)
Restricted cash	35,597	10,751	(24,521)
Purchase of available for sale securities	0	(49,892)	(63,591)
Proceeds from maturities of available for sale securities	0	0	454,141
Proceeds from sales of available for sale securities	0	0	179,531
Proceeds from sale of cost method investment	524	6,544	0
Acquisition of business, net of cash acquired	0	0	(693,247)
Receipt of contingent consideration related to business acquisition	0	16,394	0
Net cash used in investing activities	(11,977)	(68,570)	(198,894)
Cash flows from financing activities:
Proceeds from issuance of senior convertible notes payable	0	0	725,000
Repayment of capital lease obligations	(1,895)	0	0
Repayment of senior convertible notes payable	0	0	(76,065)
Debt issuance costs	(2,332)	0	(20,301)
Proceeds from issuance of common stock	12,167	13,202	1,570
Net cash provided by financing activities	7,940	13,202	630,204
Effect of exchange rate changes on cash and cash equivalents	(2,504)	(938)	682
Net increase (decrease) in cash and cash equivalents	100,548	(146,791)	202,982
Cash and cash equivalents at beginning of period	541,896	688,687	485,705
Cash and cash equivalents at end of period	642,444	541,896	688,687
Supplemental disclosure of cash flow information
Cash paid during the period for interest	33,511	32,931	12,248
Cash paid during the period for income taxes, net	9,603	3,204	1,705
Non-cash investing and financing activities
Purchase of equipment in accounts payable	5,202	6,431	5,259
Debt issuance costs in accrued liabilities	319	0	206
Fixed assets purchased under capital leases	$ 6,736	$ 1,106	$ 0