Stock Compensation Plans And Capital Stock Transactions (Summary Of Stock Option Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jan. 28, 2012 years
Stock Compensation Plans And Capital Stock Transactions [Abstract]
Outstanding, beginning of period, Number of Shares	6,033,101
Granted, Number of Shares	1,787,500
Exercised, Number of Shares	(671,441)
Canceled or expired, Number of Shares	(845,782)
Outstanding, end of period, Number of Shares	6,303,378
Vested and expected to vest at January 28, 2012, Number of Shares	5,884,162
Exercisable at January 28, 2012, Number of Shares	3,812,970
Outstanding, beginning of period, Weighted Average Exercise Price	$ 12.87
Granted, Weighted Average Exercise Price	$ 13.37
Exercised, Weighted Average Exercise Price	$ 5.52
Canceled or expired, Weighted Average Exercise Price	$ 18.16
Outstanding, end of period, Weighted Average Exercise Price	$ 13.09
Vested and expected to vest at January 28, 2012, Weighted Average Exercise Price	$ 13.08
Exercisable at January 28, 2012, Weighted Average Exercise Price	$ 13.46
Outstanding, end of period, Weighted Average Remaining Contractual Term, years	6.34
Vested and expected to vest at January 28, 2012, Weighted Average Remaining Contractual Term, years	6.15
Exercisable at January 28, 2012, Weighted Average Remaining Contractual Term, years	4.94
Outstanding, end of period, Aggregate Intrinsic Value	$ 13,590
Vested and expected to vest at January 28, 2012, Aggregate Intrinsic Value	13,515
Exercisable at January 28, 2012, Aggregate Intrinsic Value	$ 11,817