Financial Information Related to Funded Defined Benefit Pension Plan And Unfunded Supplemental Retirement Plan (Detail) (USD $)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	$ 151,300,000	$ 32,700,000	$ 77,800,000
Net liability recognized on consolidated balance sheets	221,400,000	111,700,000
Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at beginning of year	996,968,000	1,018,712,000
Service cost	40,481,000	44,623,000	41,813,000
Interest cost	49,522,000	44,654,000	42,029,000
Actuarial losses (gains)	251,144,000	(84,970,000)
Benefits paid	(28,348,000)	(23,431,000)
Expenses paid	(2,945,000)	(2,620,000)
Plan amendment	3,067,000
Projected benefit obligation at end of year	1,309,889,000	996,968,000	1,018,712,000
Accumulated benefit obligation at end of year	1,203,464,000	921,723,000
Fair value of plan assets at beginning of year	944,801,000	876,083,000
Actual return on plan assets	107,240,000	64,769,000
Employer contribution	150,000,000	30,000,000
Benefits paid	(28,348,000)	(23,431,000)
Expenses paid	(2,945,000)	(2,620,000)
Fair value of plan assets at end of year	1,170,748,000	944,801,000	876,083,000
Projected benefit obligation at end of year	1,309,889,000	996,968,000	1,018,712,000
Fair value of plan assets at end of year	1,170,748,000	944,801,000	876,083,000
Funded status - excess obligation	139,141,000	52,167,000
Net liability recognized on consolidated balance sheets	139,141,000	52,167,000
Plan amendment	3,067,000
Accumulated actuarial losses	401,165,000	205,923,000
Amounts included in accumulated other comprehensive income (loss)	404,232,000	205,923,000
Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at beginning of year	59,566,000	61,033,000
Service cost	1,398,000	1,716,000	1,448,000
Interest cost	3,001,000	2,447,000	2,321,000
Actuarial losses (gains)	19,552,000	(2,925,000)
Benefits paid	(1,279,000)	(2,705,000)
Plan amendment		2,000
Projected benefit obligation at end of year	82,238,000	59,566,000	61,033,000
Accumulated benefit obligation at end of year	68,591,000	49,957,000
Employer contribution	1,279,000	2,705,000
Benefits paid	(1,279,000)	(2,705,000)
Projected benefit obligation at end of year	82,238,000	59,566,000	61,033,000
Funded status - excess obligation	82,238,000	59,566,000
Net liability recognized on consolidated balance sheets	82,238,000	59,566,000
Plan amendment		2,000
Accumulated actuarial losses	29,198,000	11,792,000
Amounts included in accumulated other comprehensive income (loss)	$ 29,198,000	$ 11,794,000