Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Cash flows from operating activities:
Net loss	$ (40,637)us-gaap_NetIncomeLoss	$ (85,431)us-gaap_NetIncomeLoss	$ (144,021)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash provided by operating activities:
Loss on extinguishment of debt	0	28,630	0
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	55,616us-gaap_Depreciation	55,699us-gaap_Depreciation	59,099us-gaap_Depreciation
Share-based compensation costs	42,930us-gaap_ShareBasedCompensation	37,720us-gaap_ShareBasedCompensation	32,394us-gaap_ShareBasedCompensation
Amortization of intangible assets	57,151	71,308	74,497
Provision for inventory excess and obsolescence	32,332us-gaap_InventoryWriteDown	19,938us-gaap_InventoryWriteDown	23,438us-gaap_InventoryWriteDown
Provision for warranty	22,129us-gaap_ProductWarrantyExpense	24,558us-gaap_ProductWarrantyExpense	33,418us-gaap_ProductWarrantyExpense
Other	25,668us-gaap_OtherNoncashIncomeExpense	9,023us-gaap_OtherNoncashIncomeExpense	13,722us-gaap_OtherNoncashIncomeExpense
Changes in assets and liabilities:
Accounts receivable	(33,164)	(145,421)	70,366
Inventories	(37,889)us-gaap_IncreaseDecreaseInInventories	(8,943)us-gaap_IncreaseDecreaseInInventories	(53,460)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other	(7,931)	(82,809)	1,748
Accounts payable, accruals and other obligations	(59,837)	115,312	12,610
Deferred revenue	33,448	5,094	(16,722)
Net cash provided by operating activities	89,816	44,678	107,089
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(48,216)	(43,814)	(48,098)
Restricted cash	2,060	2,338	35,597
Purchase of available for sale securities	(245,196)	(184,864)	0
Proceeds from maturities of available for sale securities	195,000	95,000	0
Proceeds from sale of cost method investment	0	0	524
Settlement of foreign currency forward contracts, net	(10,041)	479	0
Net cash used in investing activities	(106,393)	(130,861)	(11,977)
Cash flows from financing activities:
Proceeds from issuance of long-term debt, net	248,750us-gaap_ProceedsFromConvertibleDebt	0us-gaap_ProceedsFromConvertibleDebt	0us-gaap_ProceedsFromConvertibleDebt
Payment of long-term debt	(625)us-gaap_RepaymentsOfConvertibleDebt	(216,210)us-gaap_RepaymentsOfConvertibleDebt	0us-gaap_RepaymentsOfConvertibleDebt
Payment of debt and equity issuance costs	(4,227)us-gaap_PaymentsOfDebtIssuanceCosts	(3,692)us-gaap_PaymentsOfDebtIssuanceCosts	(2,332)us-gaap_PaymentsOfDebtIssuanceCosts
Payment of capital lease obligations	(3,034)	(3,335)	(1,895)
Proceeds from issuance of common stock	17,663	15,898	12,167
Net cash provided by (used in) financing activities	258,527	(207,339)	7,940
Effect of exchange rate changes on cash and cash equivalents	(1,717)	(2,435)	(2,504)
Net increase (decrease) in cash and cash equivalents	240,233	(295,957)	100,548
Cash and cash equivalents at beginning of fiscal year	346,487	642,444	541,896
Cash and cash equivalents at end of fiscal year	586,720	346,487	642,444
Supplemental disclosure of cash flow information
Cash paid during the fiscal year for interest	36,276us-gaap_InterestPaid	32,397us-gaap_InterestPaid	33,511us-gaap_InterestPaid
Cash paid during the fiscal year for income taxes, net	11,396us-gaap_IncomeTaxesPaidNet	10,679us-gaap_IncomeTaxesPaidNet	9,603us-gaap_IncomeTaxesPaidNet
Non-cash investing and financing activities
Purchase of equipment in accounts payable	4,961	6,191	5,202
Fixed assets acquired under capital leases	$ 10,424us-gaap_CapitalLeaseObligationsIncurred	$ 2,538us-gaap_CapitalLeaseObligationsIncurred	$ 6,736us-gaap_CapitalLeaseObligationsIncurred

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