EQUIPMENT, BUILDING, FURNITURE AND FIXTURES (Details) $ in Thousands	6 Months Ended
	Apr. 30, 2016 USD ($)	Apr. 30, 2015 USD ($)	Oct. 31, 2015 USD ($)	Apr. 15, 2015 building CAD / ft²
Property, Plant and Equipment, Net [Abstract]
Equipment, furniture and fixtures, gross	$ 554,327		$ 486,253
Accumulated depreciation and amortization	(305,678)		(294,280)
Equipment, furniture and fixtures, net	248,649		191,973
Equipment, furniture and fixtures (Textuals) [Abstract]
Depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements	30,237	$ 27,322
Equipment, furniture and fixtures
Property, Plant and Equipment, Net [Abstract]
Equipment, furniture and fixtures, gross	428,985		404,935
Building subject to capital lease
Property, Plant and Equipment, Net [Abstract]
Equipment, furniture and fixtures, gross	24,042		13,459
Construction in progress subject to build-to-suit lease
Property, Plant and Equipment, Net [Abstract]
Equipment, furniture and fixtures, gross	42,337		18,663
Equipment, furniture and fixtures (Textuals) [Abstract]
Newly constructed assets to be leased | building				2
Maximum landlord contribution per rentable square feet | CAD / ft²				290.00
Leasehold improvements
Property, Plant and Equipment, Net [Abstract]
Equipment, furniture and fixtures, gross	58,963		$ 49,196
Equipment Furniture Fixtures And Leasehold Improvements
Equipment, furniture and fixtures (Textuals) [Abstract]
Depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements	$ 24,800	$ 22,500