Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Cash flows used in operating activities:
Net loss	$ (26,094)	$ (74,403)
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	27,143	28,857
Share-based compensation costs	23,443	18,147
Amortization of intangible assets	30,712	35,661
Provision for inventory excess and obsolescence	12,972	9,027
Provision for warranty	12,424	11,060
Other	10,164	5,068
Changes in assets and liabilities:
Accounts receivable	(27,548)	(76,526)
Inventories	(57,821)	2,975
Prepaid expenses and other	(19,054)	(33,969)
Accounts payable, accruals and other obligations	(51,631)	24,805
Deferred revenue	30,123	19,799
Net cash used in operating activities	(35,167)	(869)
Cash flows provided by (used in) investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(26,485)	(21,496)
Restricted cash	1,912	1,679
Purchase of available for sale securities	(95,033)	(99,914)
Proceeds from maturities of available for sale securities	130,000	50,000
Settlement of foreign currency forward contracts, net	(4,029)	0
Net cash provided by (used in) investing activities	6,365	(69,731)
Cash flows from financing activities:
Payment of long term debt	0	(216,210)
Payment for debt and equity issuance costs	0	(3,661)
Payment of capital lease obligations	(1,520)	(1,427)
Proceeds from issuance of common stock	8,970	5,955
Net cash provided by (used in) financing activities	7,450	(215,343)
Effect of exchange rate changes on cash and cash equivalents	(52)	(3)
Net decrease in cash and cash equivalents	(21,352)	(285,943)
Cash and cash equivalents at beginning of period	346,487	642,444
Cash and cash equivalents at end of period	325,083	356,498
Supplemental disclosure of cash flow information
Cash paid during the period for interest	17,047	15,720
Cash paid during the period for income taxes, net	7,221	5,136
Non-cash investing and financing activities
Purchase of equipment in accounts payable	4,799	3,006
Fixed assets acquired under capital leases	$ 0	$ 1,286