Summary of Significant Accounting Policies Advertising (Details) (USD $)	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Marketing and Advertising Expense [Abstract]
Advertising, Marketing, Public and Media Relations Costs	$ 247,466,000	$ 242,524,000	$ 234,050,000
Advertising costs as Percentage of Net Sales	6.10%	6.40%	6.40%