Stock-Based Compensation (Stock Options Outstanding and Exercisable by Exercise Price Range) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 29, 2011
Stock Options Outstanding, Shares	17,869
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4.8
Stock Options Outstanding, Weighted Average Exercise Price	$ 53.17
Stock Options Outstanding, Intrinsic value	$ 82,633
Stock Options Exercisable, Shares	12,478
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	4.8
Stock Options Exercisable, Weighted Average Exercise Price	$ 54.96
Stock Options Exercisable, Intrinsic value	$ 48,003
$ 17.00 - $ 35.50 [Member]
Stock Options Outstanding, Shares	1,646
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	3.6
Stock Options Outstanding, Weighted Average Exercise Price	$ 29.43
Stock Options Exercisable, Shares	1,339
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	3.3
Stock Options Exercisable, Weighted Average Exercise Price	$ 29.65
Range of Exercise Prices, minimum	$ 17.00
Range of Exercise Prices, maximum	$ 35.50
$ 35.51 - $ 38.30 [Member]
Stock Options Outstanding, Shares	170
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4.6
Stock Options Outstanding, Weighted Average Exercise Price	$ 37.27
Stock Options Exercisable, Shares	74
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	4.3
Stock Options Exercisable, Weighted Average Exercise Price	$ 37.14
Range of Exercise Prices, minimum	$ 35.51
Range of Exercise Prices, maximum	$ 38.30
$ 38.31 - $ 41.63 [Member]
Stock Options Outstanding, Shares	2,232
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	5.2
Stock Options Outstanding, Weighted Average Exercise Price	$ 41.58
Stock Options Exercisable, Shares	432
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	5.4
Stock Options Exercisable, Weighted Average Exercise Price	$ 41.44
Range of Exercise Prices, minimum	$ 38.31
Range of Exercise Prices, maximum	$ 41.63
$ 41.64 - $ 45.57 [Member]
Stock Options Outstanding, Shares	1,894
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4.6
Stock Options Outstanding, Weighted Average Exercise Price	$ 43.03
Stock Options Exercisable, Shares	906
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	5.0
Stock Options Exercisable, Weighted Average Exercise Price	$ 43.03
Range of Exercise Prices, minimum	$ 41.64
Range of Exercise Prices, maximum	$ 45.57
$ 45.58 - $ 50.37 [Member]
Stock Options Outstanding, Shares	2,317
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	7.6
Stock Options Outstanding, Weighted Average Exercise Price	$ 48.20
Stock Options Exercisable, Shares	1,888
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	8.1
Stock Options Exercisable, Weighted Average Exercise Price	$ 48.05
Range of Exercise Prices, minimum	$ 45.58
Range of Exercise Prices, maximum	$ 50.37
$ 50.38 - $ 51.81 [Member]
Stock Options Outstanding, Shares	2,377
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4.0
Stock Options Outstanding, Weighted Average Exercise Price	$ 51.39
Stock Options Exercisable, Shares	2,303
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	3.9
Stock Options Exercisable, Weighted Average Exercise Price	$ 51.39
Range of Exercise Prices, minimum	$ 50.38
Range of Exercise Prices, maximum	$ 51.81
$ 51.82 - $ 66.25 [Member]
Stock Options Outstanding, Shares	3,092
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	5.3
Stock Options Outstanding, Weighted Average Exercise Price	$ 59.29
Stock Options Exercisable, Shares	2,146
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	5.1
Stock Options Exercisable, Weighted Average Exercise Price	$ 60.65
Range of Exercise Prices, minimum	$ 51.82
Range of Exercise Prices, maximum	$ 66.25
$ 66.26 - $ 75.90 [Member]
Stock Options Outstanding, Shares	1,436
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	5.2
Stock Options Outstanding, Weighted Average Exercise Price	$ 68.48
Stock Options Exercisable, Shares	1,337
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	5.3
Stock Options Exercisable, Weighted Average Exercise Price	$ 68.23
Range of Exercise Prices, minimum	$ 66.26
Range of Exercise Prices, maximum	$ 75.90
$ 75.91 - $ 77.62 [Member]
Stock Options Outstanding, Shares	2,705
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in years)	3.2
Stock Options Outstanding, Weighted Average Exercise Price	$ 75.98
Stock Options Exercisable, Shares	2,053
Stock Options Exercisable, Weighted Average Remaining Contractual Life (in years)	3.2
Stock Options Exercisable, Weighted Average Exercise Price	$ 75.98
Range of Exercise Prices, minimum	$ 75.91
Range of Exercise Prices, maximum	$ 77.62