Description of the Business and Summary of Significant Accounting Policies and Practices (Details 6)	12 Months Ended
	Jan. 28, 2017
Purchased intangibles | Minimum
Summary of Significant Accounting Policies
Purchased intangibles, useful life	4 years
Purchased intangibles | Maximum
Summary of Significant Accounting Policies
Purchased intangibles, useful life	20 years
Building and building improvements including properties under capital lease | Minimum
Summary of Significant Accounting Policies
Property and equipment, useful life	10 years
Building and building improvements including properties under capital lease | Maximum
Summary of Significant Accounting Policies
Property and equipment, useful life	39 years
Land improvements
Summary of Significant Accounting Policies
Property and equipment, useful life	5 years
Furniture, fixtures and equipment | Minimum
Summary of Significant Accounting Policies
Property and equipment, useful life	2 years
Furniture, fixtures and equipment | Maximum
Summary of Significant Accounting Policies
Property and equipment, useful life	10 years