Summary of Stock Option Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance at beginning of year, shares	16,564	17,869
Granted, shares	1,387	1,008
Exercised, shares	(1,218)	(1,098)
Forfeited/expired, shares	(832)	(854)
Balance at end of quarter, shares	15,901	16,925
Balance at beginning of year, Weighted Average Exercise Price (in dollars per share)	$ 53.41	$ 53.17
Granted, Weighted Average Exercise Price (in dollars per share)	$ 49.15	$ 52.61
Exercised, Weighted Average Exercise Price (in dollars per share)	$ 40.17	$ 43.20
Forfeited/expired, Weighted Average Exercise Price (in dollars per share)	$ 60.80	$ 62.27
Balance at end of quarter, Weighted Average Exercise Price (in dollars per share)	$ 53.66	$ 53.32