Financial Instruments and Fair Value - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended									6 Months Ended		12 Months Ended	6 Months Ended		12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012 Year	Jul. 30, 2011	Jan. 28, 2012	Jul. 28, 2012 Foreign Exchange Contract	Jan. 28, 2012 Foreign Exchange Contract	Jul. 30, 2011 Foreign Exchange Contract	Jul. 28, 2012 Commodity Contract	Jan. 28, 2012 Commodity Contract	Jul. 30, 2011 Commodity Contract	Jul. 28, 2012 Cash Flow Hedging Foreign Exchange Contract	Jul. 30, 2011 Cash Flow Hedging Foreign Exchange Contract	Jan. 28, 2012 Cash Flow Hedging Foreign Exchange Contract	Jul. 28, 2012 Cash Flow Hedging Commodity Contract	Jul. 30, 2011 Cash Flow Hedging Commodity Contract	Jan. 28, 2012 Cash Flow Hedging Commodity Contract
Financial Instruments and Fair Value [Line Items]
Amount of agreement in place for senior unsecured multi-currency five-year revolving credit external funding			$ 400
Revolving credit agreement period (in years)			5
Borrowings on unsecured senior revolving credit agreement	0	0	0	0	0
Interest rate protection agreements outstanding	0	0	0	0	0
Total notional amount						52.3	48.9	51.0
Cash flow hedges settlement period												These contracts have been designated as cash flow hedges and will be settled over the next 17 months (January 28, 2012 and July 30, 2011: 13 months and 20 months, respectively).			These contracts have been designated as cash flow hedges and will be settled over the next 16 months (January 28, 2012 and July 30, 2011: 12 months and 18 months, respectively).
Contracts maturity period												17 months	20 months	13 months	16 months	18 months	12 months
Total notional amount									197.5	211.2	195.5
Ineffective portion of hedging instruments taken into other operating income, net	$ 0	$ 0.4	$ 0	$ 0.4