Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Cash flows from operating activities:
Net loss	$ (74,403)	$ (75,433)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Loss on extinguishment of debt	28,630	0
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	28,857	29,079
Share-based compensation costs	18,147	16,830
Amortization of intangible assets	35,661	37,865
Provision for inventory excess and obsolescence	9,027	13,982
Provision for warranty	11,060	16,615
Other	5,068	7,993
Changes in assets and liabilities:
Accounts receivable	(76,526)	19,107
Inventories	2,975	(26,630)
Prepaid expenses and other	(33,969)	19,597
Accounts payable, accruals and other obligations	24,805	8,315
Deferred revenue	19,799	6,036
Net cash provided by (used in) operating activities	(869)	73,356
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(21,496)	(16,150)
Restricted cash	1,679	(17,202)
Purchase of available for sale securities	(99,914)	0
Proceeds from maturities of available for sale securities	50,000	0
Proceeds from sale of cost method investment	0	524
Net cash used in investing activities	(69,731)	(32,828)
Cash flows from financing activities:
Payment of long term debt	(216,210)	0
Payment for debt and equity issuance costs	(3,661)	0
Payment of capital lease obligations	(1,427)	(699)
Proceeds from issuance of common stock	5,955	5,715
Net cash provided by (used in) financing activities	(215,343)	5,016
Effect of exchange rate changes on cash and cash equivalents	(3)	(1,893)
Net increase (decrease) in cash and cash equivalents	(285,943)	45,544
Cash and cash equivalents at beginning of period	642,444	541,896
Cash and cash equivalents at end of period	356,498	585,547
Supplemental disclosure of cash flow information
Cash paid during the period for interest	15,720	16,520
Cash paid during the period for income taxes, net	5,136	5,811
Non-cash investing and financing activities
Purchase of equipment in accounts payable	3,006	4,004
Fixed assets acquired under capital leases	$ 1,286	$ 4,427