Financial Information Related to Funded Defined Benefit Pension Plan and Unfunded Supplemental Pension Plan (Detail) - USD ($) $ in Thousands	3 Months Ended
	May 05, 2018	Apr. 29, 2017
Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 11,613	$ 11,805
Interest cost	13,965	13,759
Expected return on plan assets	(20,962)	(17,382)
Recognized actuarial losses	3,114	5,580
Total expense	7,730	13,762
Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	611	588
Interest cost	853	843
Recognized actuarial losses	821	831
Total expense	$ 2,285	$ 2,262