Fair Values of Financial Instruments - Deferred Compensation Plan Commodity Hedging Agreements and Acquisition Related Contingent Consideration (Detail) - USD ($) $ in Thousands	Jun. 28, 2020	Mar. 29, 2020	Dec. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018
Assets:
Commodity hedging agreements	$ 823		$ 1,007
Liabilities:
Commodity hedging agreements	2,918		1,174
Fair Value Level 3
Liabilities:
Acquisition related contingent consideration	441,113	$ 437,094	446,684	$ 412,450	$ 393,007	$ 382,898
Carrying Amount
Assets:
Deferred compensation plan assets	43,904		42,543
Liabilities:
Deferred compensation plan liabilities	43,904		42,543
Nonpublic variable rate debt	247,338		307,250
Nonpublic fixed rate debt	374,734		374,723
Public debt securities	348,102		347,947
Acquisition related contingent consideration	441,113		446,684
Carrying Amount | Commodity hedges
Assets:
Commodity hedging agreements	823		1,007
Liabilities:
Commodity hedging agreements	2,918		1,174
Total Fair Value
Assets:
Deferred compensation plan assets	43,904		42,543
Liabilities:
Deferred compensation plan liabilities	43,904		42,543
Nonpublic variable rate debt	247,500		307,500
Nonpublic fixed rate debt	391,700		383,900
Public debt securities	385,000		367,300
Acquisition related contingent consideration	441,113		446,684
Total Fair Value | Commodity hedges
Assets:
Commodity hedging agreements	823		1,007
Liabilities:
Commodity hedging agreements	2,918		1,174
Total Fair Value | Fair Value Level 1
Assets:
Deferred compensation plan assets	43,904		42,543
Liabilities:
Deferred compensation plan liabilities	43,904		42,543
Nonpublic variable rate debt	0		0
Nonpublic fixed rate debt	0		0
Public debt securities	0		0
Acquisition related contingent consideration	0		0
Total Fair Value | Fair Value Level 1 | Commodity hedges
Assets:
Commodity hedging agreements	0		0
Liabilities:
Commodity hedging agreements	0		0
Total Fair Value | Fair Value Level 2
Assets:
Deferred compensation plan assets	0		0
Liabilities:
Deferred compensation plan liabilities	0		0
Nonpublic variable rate debt	247,500		307,500
Nonpublic fixed rate debt	391,700		383,900
Public debt securities	385,000		367,300
Acquisition related contingent consideration	0		0
Total Fair Value | Fair Value Level 2 | Commodity hedges
Assets:
Commodity hedging agreements	823		1,007
Liabilities:
Commodity hedging agreements	2,918		1,174
Total Fair Value | Fair Value Level 3
Assets:
Deferred compensation plan assets	0		0
Liabilities:
Deferred compensation plan liabilities	0		0
Nonpublic variable rate debt	0		0
Nonpublic fixed rate debt	0		0
Public debt securities	0		0
Acquisition related contingent consideration	441,113		446,684
Total Fair Value | Fair Value Level 3 | Commodity hedges
Assets:
Commodity hedging agreements	0		0
Liabilities:
Commodity hedging agreements	$ 0		$ 0