Business and Summary of Significant Accounting Policies (Property and Equipment) (Details)	12 Months Ended
	Jan. 31, 2017
Building and Building Improvements | Minimum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	15 years
Building and Building Improvements | Maximum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	39 years
Leasehold Improvements | Minimum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	3 years
Leasehold Improvements | Maximum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	10 years
Furniture and Fixtures | Minimum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	3 years
Furniture and Fixtures | Maximum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	10 years