EQUIPMENT, BUILDING, FURNITURE AND FIXTURES (Details) $ in Thousands	9 Months Ended
	Jul. 31, 2017 USD ($)	Jul. 31, 2016 USD ($)	Oct. 31, 2016 USD ($)	Apr. 15, 2015 building CAD / ft²
Property, Plant and Equipment, Net [Abstract]
Buildings, equipment, furniture and fixtures, gross	$ 649,101		$ 591,171
Accumulated depreciation and amortization	(334,251)		(302,765)
Buildings, equipment, furniture and fixtures, net	314,850		288,406
Equipment, furniture and fixtures (Textuals) [Abstract]
Depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements	55,873	$ 46,624
Equipment, furniture and fixtures
Property, Plant and Equipment, Net [Abstract]
Buildings, equipment, furniture and fixtures, gross	483,482		451,029
Building
Property, Plant and Equipment, Net [Abstract]
Buildings, equipment, furniture and fixtures, gross	79,002		22,529
Equipment, furniture and fixtures (Textuals) [Abstract]
Building subject to capital lease	50,370	8,993
Construction in progress subject to build-to-suit lease
Property, Plant and Equipment, Net [Abstract]
Buildings, equipment, furniture and fixtures, gross	0		57,602
Equipment, furniture and fixtures (Textuals) [Abstract]
Number of buildings to be leased | building				2
Maximum landlord contribution per rentable square feet | CAD / ft²				290.00
Leasehold improvements
Property, Plant and Equipment, Net [Abstract]
Buildings, equipment, furniture and fixtures, gross	86,617		$ 60,011
Equipment furniture fixtures and leasehold improvements
Equipment, furniture and fixtures (Textuals) [Abstract]
Depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements	$ 48,300	$ 38,500