Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Cash flows used in operating activities:
Net income (loss)	$ (9,934)	$ (75,634)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on extinguishment of debt	0	28,630
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	41,463	42,613
Share-based compensation costs	34,204	28,032
Amortization of intangible assets	43,931	53,485
Provision for inventory excess and obsolescence	22,026	15,301
Provision for warranty	18,720	15,148
Other	21,254	8,384
Changes in assets and liabilities:
Accounts receivable	(55,688)	(86,808)
Inventories	(66,015)	9,267
Prepaid expenses and other	(26,698)	(56,958)
Accounts payable, accruals and other obligations	(34,794)	49,253
Deferred revenue	27,498	10,414
Net cash provided by operating activities	15,967	41,127
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(35,974)	(31,884)
Restricted cash	2,059	1,921
Purchase of available for sale securities	(195,259)	(144,893)
Proceeds from maturities of available for sale securities	150,000	80,000
Settlement of foreign currency forward contracts, net	(10,796)	62
Net cash used in investing activities	(89,970)	(94,794)
Cash flows from financing activities:
Proceeds from issuance of term loan, net	248,750	0
Payment of long term debt	0	(216,210)
Payment for debt and equity issuance costs	(3,263)	(3,670)
Payment of capital lease obligations	(2,275)	(2,370)
Proceeds from issuance of common stock	17,518	14,060
Net cash provided by (used in) financing activities	260,730	(208,190)
Effect of exchange rate changes on cash and cash equivalents	(330)	(2,408)
Net increase (decrease) in cash and cash equivalents	186,727	(261,857)
Cash and cash equivalents at beginning of period	346,487	642,444
Cash and cash equivalents at end of period	532,884	378,179
Supplemental disclosure of cash flow information
Cash paid during the period for interest	23,425	21,674
Cash paid during the period for income taxes, net	9,051	7,117
Non-cash investing and financing activities
Purchase of equipment in accounts payable	4,334	1,222
Debt issuance costs in accrued liabilities	655	22
Fixed assets acquired under capital leases	$ 0	$ 2,538