Fair Values of Financial Instruments - Deferred Compensation Plan Commodity Hedging Agreements and Acquisition Related Contingent Consideration (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Assets:
Commodity hedging agreements	$ 4,420	$ 1,289
Fair Value Level 1 [Member]
Assets:
Deferred compensation plan assets	33,166	24,903
Liabilities:
Deferred compensation plan liabilities	33,166	24,903
Fair Value Level 2 [Member]
Liabilities:
Non-public variable rate debt	507,000	452,000
Non-public fixed rate debt	126,400
Public debt securities	475,100	475,800
Fair Value Level 2 [Member] \| Commodity Contract [Member]
Assets:
Commodity hedging agreements	4,420	1,289
Fair Value Level 3 [Member]
Liabilities:
Acquisition related contingent consideration	381,291	253,437	$ 136,570
Carrying Amount [Member]
Assets:
Deferred compensation plan assets	33,166	24,903
Liabilities:
Deferred compensation plan liabilities	33,166	24,903
Non-public variable rate debt	506,398	451,222
Non-public fixed rate debt	124,829
Public debt securities	456,791	456,032
Acquisition related contingent consideration	381,291	253,437
Carrying Amount [Member] \| Commodity Contract [Member]
Assets:
Commodity hedging agreements	4,420	1,289
Total Fair Value [Member]
Assets:
Deferred compensation plan assets	33,166	24,903
Liabilities:
Deferred compensation plan liabilities	33,166	24,903
Acquisition related contingent consideration	381,291	253,437
Non-public variable rate debt	507,000	452,000
Non-public fixed rate debt	126,400
Public debt securities	475,100	475,800
Total Fair Value [Member] \| Commodity Contract [Member]
Assets:
Commodity hedging agreements	$ 4,420	$ 1,289

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