Share Based Compensation (SARS Activity) (Details) (Stock Appreciation Rights (SARs) [Member], USD $)	6 Months Ended
	Jul. 28, 2012 y
Stock Appreciation Rights Activity
Outstanding Number of Shares Beginning Balance	9,039,334
Outstanding Weighted-Average Exercise Price Beginning	$ 39.66
Exercised, Number of Shares	(29,325)
Exercised, Weighted-Average Exercise Price	$ 32.20
Forfeited or cancelled, Number of Shares	65,975
Forfeited or cancelled, Weighted-Average Exercise Price	$ 45.28
Outstanding Number of Shares Ending Balance	9,293,334
Outstanding, Weighted-Average Exercise Price Ending	$ 40.14
Outstanding, Aggregate Intrinsic Value	$ 36,608,541
Stock appreciation rights exercisable, Number of shares	1,836,883
Stock appreciation rights exercisable, Weighted-Average Exercise Price	$ 42.60
Stock appreciation rights exercisable, Aggregate Intrinsic Value	3,484,094
Outstanding, Weighted-Average Remaining Contractual Life	4.8
Outstanding, Weighted-Average Remaining Contractual Life	5.5
Stock appreciation rights expected to become exercisable, Number of Shares	7,376,660
Stock appreciation rights expected to become exercisable, Weighted-Average Exercise Price	$ 39.44
Stock appreciation rights expected to become exercisable, Aggregate Intrinsic Value	$ 33,061,713
Stock appreciation rights expected to become exercisable, Weighted Average Remaining Contractual Life	4.6
Chairman And Chief Executive Officer [Member]
Stock Appreciation Rights Activity
Granted, Number of Shares	0
Exercise price	$ 0
Executive Officers (excluding Chairman and Chief Executive Officer) [Member]
Stock Appreciation Rights Activity
Granted, Number of Shares	212,500
Exercise price	$ 52.89
All Other Associates [Member]
Stock Appreciation Rights Activity
Granted, Number of Shares	136,800
Exercised, Weighted-Average Exercise Price	$ 52.66