Fair Value of Assets and Liabilities - Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	$ 809,217	$ 787,998	$ 739,579
Total derivative assets	5,214	6,407
Total derivative liabilities	(1,105)	(109)
Net derivative asset	4,109	6,298
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	167,069	192,935
Total derivative assets	0	0
Total derivative liabilities	0	0
Net derivative asset	0	0
Deferred Compensation Plan, Fair Value of Plan Liability	0	0
Net effect of financial asset less financial liability	167,069	192,935
Fair Value, Inputs, Level 1 [Member] | Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 1 [Member] | U.S. Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	113,410	124,136
Fair Value, Inputs, Level 1 [Member] | Foreign Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	35,398	44,684
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	17,176	19,872
Fair Value, Inputs, Level 1 [Member] | Real Estate [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 1 [Member] | Commodities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 1 [Member] | Insurance Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 1 [Member] | Cash and Other [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	1,085	4,243
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	260,323	248,690
Total derivative assets	5,214	6,407
Total derivative liabilities	(1,105)	(109)
Net derivative asset	4,109	6,298
Deferred Compensation Plan, Fair Value of Plan Liability	(36,257)	(28,289)
Net effect of financial asset less financial liability	228,175	226,699
Fair Value, Inputs, Level 2 [Member] | Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 2 [Member] | U.S. Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	22,743	29,192
Fair Value, Inputs, Level 2 [Member] | Foreign Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	90,606	72,871
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	126,327	128,181
Fair Value, Inputs, Level 2 [Member] | Real Estate [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 2 [Member] | Commodities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	15,519	12,649
Fair Value, Inputs, Level 2 [Member] | Insurance Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	5,128	5,797
Fair Value, Inputs, Level 2 [Member] | Cash and Other [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	381,825	346,373
Total derivative assets	0	0
Total derivative liabilities	0	0
Net derivative asset	0	0
Deferred Compensation Plan, Fair Value of Plan Liability	0	0
Net effect of financial asset less financial liability	381,825	346,373
Fair Value, Inputs, Level 3 [Member] | Hedge Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	338,169	305,499	281,908
Fair Value, Inputs, Level 3 [Member] | Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	338,169	305,499
Fair Value, Inputs, Level 3 [Member] | U.S. Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 3 [Member] | Foreign Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 3 [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	43,656	40,874	$ 33,575
Fair Value, Inputs, Level 3 [Member] | Real Estate [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	43,656	40,874
Fair Value, Inputs, Level 3 [Member] | Commodities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 3 [Member] | Insurance Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	0	0
Fair Value, Inputs, Level 3 [Member] | Cash and Other [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Defined benefit pension plan investment assets	$ 0	$ 0