Pension Plans and Other Retirement Benefits - Additional Information (Detail) - USD ($) $ in Thousands			1 Months Ended		3 Months Ended	12 Months Ended
	Oct. 21, 2016	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Apr. 30, 2016	Feb. 03, 2018	Jan. 28, 2017	Dec. 31, 2016	Jan. 30, 2016
Pension Plans and Other Retirement Benefits [Line Items]
Net accrued liability recognized in balance sheet						$ 77,600	$ 178,400
Pension plans and other retirement benefits, current liability						2,400	4,000
Pension plans and other retirement benefits, long-term liability						88,600	174,400
Pension plans and other retirement benefits, long-term asset						13,400
Employer contribution						$ 105,000	54,600		$ 55,700
Minimum percentage of pension liability						80.00%
Anticipated employer's contribution to fund current benefit and expense payments under the unfunded plan in fiscal 2019						$ 2,400
Pension settlement charge							$ 31,173
Defined benefit plan, benefits paid	$ 103,200
Pension expense discount rate		4.80%					3.80%
Expected rate of return on plan assets		6.50%					6.00%
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%
Rate of defined pension plan						25.00%
Percentage of plan assets representing stock funds			3.90%	6.20%
Post retirement medical and life insurance benefits to retirees						Who were eligible for the defined benefit plan and who retired at age 55 or older with ten or more years of service.
Multiemployer Pension Plans
Pension Plans and Other Retirement Benefits [Line Items]
Pension contribution to National Retirement Fund						$ 16,300	$ 14,500		13,400
Percentage of pension contribution								5.00%
Retirement/Deferred Savings Plan
Pension Plans and Other Retirement Benefits [Line Items]
Employer contribution						$ 12,600	10,200		9,700
Funded Plan
Pension Plans and Other Retirement Benefits [Line Items]
Excess percentage of projected benefit obligation for amortization of unrecognized gains and losses						10.00%
401(k) Plan
Pension Plans and Other Retirement Benefits [Line Items]
Fair value of plan assets at end of year			$ 1,787,900	$ 1,480,900				$ 1,480,900
Deferral Rate
Pension Plans and Other Retirement Benefits [Line Items]
Rate of defined pension plan						2.00%
Employee Savings Plan
Pension Plans and Other Retirement Benefits [Line Items]
Total cost to employer						$ 54,500	45,600		41,900
Nonqualified Savings Plan
Pension Plans and Other Retirement Benefits [Line Items]
Employer contribution						$ 6,300	5,800		$ 4,500
Post Retirement Medical Plan
Pension Plans and Other Retirement Benefits [Line Items]
Minimum age of retirement						55 years
Minimum years of employment to be eligible in post retirement medical plan						10 years
Pre-tax income from post retirement medical plan reflected in income statement					$ 5,500
Funded Plan
Pension Plans and Other Retirement Benefits [Line Items]
Net accrued liability recognized in balance sheet						$ (13,442)	92,050
Estimated amortization of net actuarial loss for 2019						12,100
Estimated amortization of prior service cost for 2019						400
Employer contribution						100,000	50,000
Pension settlement charge							31,173
Defined benefit plan, benefits paid						$ 30,993	$ 28,751
Pension expense discount rate						4.00%	4.00%		4.00%
Expected rate of return on plan assets						6.00%			6.75%
Fair value of plan assets at end of year						$ 1,417,531	$ 1,176,960		$ 1,119,842
Pre-tax income from post retirement medical plan reflected in income statement							31,173
Unfunded Plan
Pension Plans and Other Retirement Benefits [Line Items]
Net accrued liability recognized in balance sheet						91,047	86,309
Estimated amortization of net actuarial loss for 2019						3,300
Employer contribution						5,046	4,624
Defined benefit plan, benefits paid						$ 5,046	$ 4,624
Pension expense discount rate						6.00%	6.00%		6.00%