Shareholders' Equity - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended			9 Months Ended
	Nov. 01, 2014	Aug. 02, 2014	Nov. 01, 2013	Nov. 01, 2014	Nov. 02, 2013
Shareholders Equity [Line Items]
Shares repurchase	68,261		371,713	288,393	1,495,571
Average repurchase price	$ 109.18		$ 67.26
Amount reclassified from other reserves to retained earnings		$ 234.8