Equity and Incentive Compensation Plans - Summary of Stock Option Activity (Detail) (USD $)	3 Months Ended		9 Months Ended
	Oct. 27, 2012		Oct. 27, 2012
Stock Options
Options outstanding at beginning of period (shares)			4,498,817
Granted (shares)	0	[1]	524,750	[1]
Exercised (shares)			(1,890,340)
Forfeited or expired (shares)			(303,266)
Options outstanding at end of period (shares)	2,829,961		2,829,961
Vested and exercisable at July 28, 2012 (shares)	1,890,259		1,890,259
Options expected to vest in the future as of July 28, 2012 (shares)	816,906		816,906
Weighted Average Exercise Price
Options outstanding at beginning of period (dollars per share)			$ 22.18
Granted (dollars per share)			$ 28.05	[1]
Exercised (dollars per share)			$ 18.15
Forfeited or expired (dollars per share)			$ 26.95
Options outstanding at end of period (dollars per share)	$ 25.45		$ 25.45
Vested and exercisable at July 28, 2012 (dollars per share)	$ 25.20		$ 25.20
Options expected to vest in the future as of July 28, 2012 (dollars per share)	$ 26.06		$ 26.06

[1] Options vest annually over a three-year period and expire ten years after the grant date.