Goodwill And Intangible Assets (Summary Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2012
Goodwill And Intangible Assets [Abstract]
Balance at October 31, 2011	$ 1,289,286
Addition	5,458	[1]
Adjustments	741	[2]
Balance at January 31, 2012	$ 1,295,485

[1] Addition relates to an acquisition in the current quarter.

[2] Adjustment relates to achievement of certain milestones relating to a contingent consideration for an acquisition that closed prior to fiscal 2010.