Financial Information Related to Funded Defined Benefit Retirement Plan And Unfunded Supplemental Pension Plan (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 04, 2013	Apr. 28, 2012
Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 11,274	$ 9,825
Interest cost	11,325	10,263
Expected return on plan assets	(14,624)	(13,926)
Recognized actuarial losses	6,918	7,097
Total expense	14,893	13,259
Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	521	339
Interest cost	593	570
Amortization of prior service cost	1	1
Recognized actuarial losses	560	475
Total expense	$ 1,675	$ 1,385