Pension Plans and Other Retirement Benefits - Additional Information (Detail) (USD $)	12 Months Ended
	Jan. 31, 2015	Dec. 31, 2014	Feb. 01, 2014	Dec. 31, 2013	Feb. 02, 2013	Dec. 31, 2012
Pension Plans and Other Retirement Benefits [Line Items]
Net accrued liability recognized in balance sheet	$ 221,400,000		$ 111,700,000
Pension plans and other retirement benefits, current liability	3,500,000		3,400,000
Pension plans and other retirement benefits, long-term liability	217,900,000		108,300,000
Increase in projected benefit obligation			33,800,000
Employer contribution	151,300,000		32,700,000		77,800,000
Minimum percentage of pension liability	80.00%
Anticipated employer's contribution to fund current benefit and expense payments under the unfunded plan in fiscal 2016	3,300,000
Incremental pension expense			27,000,000
Percentage of employees contribution from eligible pay, maximum	50.00%
Rate of eligible pay for matching employee contributions	5.00%
Minimum range of rates for matching employee contributions	25.00%
Maximum range of rates for matching employee contributions	75.00%
Percentage of employees limit for contribution	50.00%
Deferral rate	25.00%
Percentage of plan investments representing stock funds		7.40%		8.30%		7.20%
Post retirement medical and life insurance benefits to retirees	Who are eligible for the defined benefit plan and who retired at age 55 or older with ten or more years of service
Estimated cost retirement medical liability	1,100,000
Multiemployer Pension Plans
Pension Plans and Other Retirement Benefits [Line Items]
Pension contribution to National Retirement Fund	11,500,000		11,500,000		10,900,000
Percentage of pension contribution				5.00%
Retirement/Deferred Savings Plan
Pension Plans and Other Retirement Benefits [Line Items]
Employer contribution	9,300,000		8,100,000		7,100,000
Funded Plan
Pension Plans and Other Retirement Benefits [Line Items]
Net accrued liability recognized in balance sheet	139,141,000		52,167,000
Estimated amortization of net actuarial loss for 2016	33,800,000
Estimated amortization of prior service cost for 2016	377,000
Increase in projected benefit obligation	59,000,000
Employer contribution	150,000,000		30,000,000
Excess percentage of projected benefit obligation for amortization of unrecognized gains and losses	10.00%
Fair value of plan assets at end of year	1,170,748,000		944,801,000		876,083,000
Defined benefit plan, benefits paid	28,348,000		23,431,000
Unfunded Plan
Pension Plans and Other Retirement Benefits [Line Items]
Net accrued liability recognized in balance sheet	82,238,000		59,566,000
Estimated amortization of net actuarial loss for 2016	5,200,000
Increase in projected benefit obligation	4,000,000
Employer contribution	1,279,000		2,705,000
Defined benefit plan, benefits paid	1,279,000		2,705,000
Post Retirement Medical Plan
Pension Plans and Other Retirement Benefits [Line Items]
Pension plans and other retirement benefits, current liability	167,000
Pension plans and other retirement benefits, long-term liability	932,000
Minimum age of retirement	55 years
Minimum years of employment to be eligible in post retirement medical plan	10 years
Defined benefit plan, benefits paid	174,000
Cost of benefit plan amendment	46,800,000
Unamortized balance of plan	9,400,000
Amount amortized in 2016	3,500,000
Pre-tax income from post retirement medical plan reflected in income statement	3,500,000
401(k) Plan
Pension Plans and Other Retirement Benefits [Line Items]
Fair value of plan assets at end of year		1,275,400,000		1,137,300,000
Deferral Rate
Pension Plans and Other Retirement Benefits [Line Items]
Deferral rate	2.00%
Employee Savings Plan
Pension Plans and Other Retirement Benefits [Line Items]
Employer contribution	31,200,000		29,700,000		16,100,000
Fair value of plan assets at end of year				13,400,000
Nonqualified Savings Plan
Pension Plans and Other Retirement Benefits [Line Items]
Employer contribution	$ 3,500,000		$ 2,400,000		$ 4,000,000