Income Taxes Deferred (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2012	Oct. 31, 2011
Deferred tax assets:
Stock-based compensation	$ 73,467	$ 67,190
Deferred Rent	4,807	4,874
Compensation and benefit expense	3,800	3,077
Federal benefit of unrecognized state tax benefits	3,545	3,554
Unrealized losses on derivative instruments	772	929
Differences between book and tax bases of investments	0	5,763
Other	192	403
Total deferred tax asset	86,583	85,790
Deferred tax liabilities:
Deferred sales commissions	(7,376)	(10,624)
Compensation and benefit expense	(5,560)	(10,909)
Differences between book and tax bases of goodwill and intangibles	(15,818)	(16,075)
Unrealized net holding gains on investments	(3,303)	(1,873)
Differences between book and tax bases of property	(3,268)	(4,966)
Differences between book and tax bases of investments	(24)	0
Total deferred tax liability	(35,349)	(44,447)
Net deferred tax asset	$ 51,234	$ 41,343