Summary Of Significant Accounting Policies - Additional Information1 (Detail)					3 Months Ended						4 Months Ended	12 Months Ended
	Feb. 17, 2023 USD ($)	Mar. 09, 2021 USD ($)	Sep. 28, 2016 USD ($)	Apr. 03, 2012 USD ($)	Dec. 30, 2023 USD ($)	Oct. 07, 2023 USD ($)	Dec. 31, 2022 USD ($) Aircraft	Oct. 08, 2022 USD ($)	Jul. 16, 2022 USD ($)	Apr. 03, 2022 USD ($)	Apr. 23, 2022 USD ($)	Dec. 30, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)	Jan. 01, 2022 USD ($)	Jul. 15, 2023 USD ($)
Significant Accounting Policies [Line Items]
Lessee, operating lease, residual value guarantees, description												Additionally, these contracts do not contain residual value guarantees, and there are no other restrictions or covenants in the contracts.
Lessee, operating lease, existence of residual value guarantees												false
Financing ROU assets					$ 130,000		$ 1,778,000					$ 130,000	$ 1,778,000
Financing right-of-use lease liabilities					122,000							$ 122,000
Number of operating segments | Segment												1
Restructuring and related impairment charges												$ 0		$ 0
Impairment charge											$ 1,000,000
Goodwill impairment loss												0	0	0
Advertising and marketing costs												99,300,000	74,600,000	77,700,000
Capitalized software development costs					106,500,000		14,500,000					106,500,000	14,500,000
Amortization expense of capitalized software development costs												14,200,000	10,200,000	9,900,000
Debt instrument face amount					900,000,000		900,000,000					900,000,000	900,000,000
Research and development costs												5,900,000	6,100,000	5,600,000
Consulting costs related to transformation strategy												21,500,000	33,200,000
Proceeds from sale of assets held for sale						$ 1,300,000				$ 1,200,000
Multi-employer pension plan withdrawal costs														$ 3,300,000
Acquisition related costs								$ 11,600,000
Realized foreign currency exchange losses								8,400,000
Investment in unconsolidated affiliate					5,481,000		$ 9,000,000					5,481,000	9,000,000
Fair value of investment in unconsolidated affiliate					5,500,000							5,500,000
Investment impairment loss					5,500,000
Severance and lease termination charges									$ 1,700,000
Number of aircrafts sold | Aircraft							2
Gain on sale of aircraft							$ 6,100,000
Initial Investment
Significant Accounting Policies [Line Items]
Fair value of investment in unconsolidated affiliate									$ 9,000,000
Second Investment
Significant Accounting Policies [Line Items]
Fair value of investment in unconsolidated affiliate															$ 2,000,000
Papa Pita
Significant Accounting Policies [Line Items]
Business acquisition consideration amount	$ 274,755,000
Acquisition related costs												3,700,000	900,000
2031 Notes
Significant Accounting Policies [Line Items]
Debt instrument face amount		$ 500,000,000			500,000,000		500,000,000					500,000,000	500,000,000
Debt instrument discount and issuance cost amortization period		10 years
2026 Notes
Significant Accounting Policies [Line Items]
Debt instrument face amount			$ 400,000,000		400,000,000		400,000,000					400,000,000	400,000,000
Debt instrument discount and issuance cost amortization period			10 years
4.375% Senior Notes Due 2022
Significant Accounting Policies [Line Items]
Debt instrument face amount				$ 400,000,000.0
Debt instrument discount and issuance cost amortization period				10 years
Selling, Distribution and Administrative Expenses
Significant Accounting Policies [Line Items]
Impairment charge												$ 2,300,000
Holsum Bakery
Significant Accounting Policies [Line Items]
Impairment charges assets held for sale								3,800,000
Severance costs								1,700,000
Multi-employer pension plan withdrawal costs								1,300,000
Warehouse Classified as Held for Sale
Significant Accounting Policies [Line Items]
Impairment charge					$ 1,800,000	$ 1,800,000				$ 1,000,000
Bakery Equipment
Significant Accounting Policies [Line Items]
Lessee, operating lease term												less than a year up to three years
Impairment charges assets held for sale								$ 2,900,000
Transportation Equipment
Significant Accounting Policies [Line Items]
Lessee, operating lease term												less than one year up to seven years
IT Equipment
Significant Accounting Policies [Line Items]
Lessee, operating lease term												less than a year up to five years
Certain Equipment and IT Equipment
Significant Accounting Policies [Line Items]
Lessee, operating lease term												shorter than a year
Buildings and Land
Significant Accounting Policies [Line Items]
Lessee, operating lease, residual value guarantees, description												Additionally, these contracts do not contain residual value guarantees, and there are no other restrictions or covenants in the contracts.
Lessee, operating lease, existence of residual value guarantees												false
Short Term Leases
Significant Accounting Policies [Line Items]
Lessee, operating lease, residual value guarantees, description												do not contain residual value guarantees, and there are no other restrictions or covenants in the leases.
Lessee, operating lease, existence of residual value guarantees												false
Lessee, operating lease, option to extend, description												There are no purchase options present, however, there generally are renewals that could extend lease terms for additional periods.
Lessee, operating lease, purchase options												false
Embedded Financing I T Equipment
Significant Accounting Policies [Line Items]
Financing ROU assets							1,400,000						1,400,000
Financing right-of-use lease liabilities							$ 1,500,000						$ 1,500,000
Maximum
Significant Accounting Policies [Line Items]
Lessee, operating lease term					22 years							22 years
Lessee, operating lease renewal term					10 years							10 years
Finite-lived intangible asset amortization periods					40 years							40 years
Maximum | Trademarks
Significant Accounting Policies [Line Items]
Finite-lived intangible asset amortization periods					40 years							40 years
Maximum | Bakery Equipment
Significant Accounting Policies [Line Items]
Lessee, operating lease term					3 years							3 years
Maximum | Transportation Equipment
Significant Accounting Policies [Line Items]
Lessee, operating lease term					7 years							7 years
Maximum | IT Equipment
Significant Accounting Policies [Line Items]
Lessee, operating lease term					5 years							5 years
Maximum | Short Term Leases
Significant Accounting Policies [Line Items]
Lessee, operating lease term					12 months							12 months
Maximum | Capitalized Software Development Costs
Significant Accounting Policies [Line Items]
Estimated useful life, years					8 years							8 years
Minimum
Significant Accounting Policies [Line Items]
Lessee, operating lease term					1 year							1 year
Lessee, operating lease renewal term					1 month							1 month
Finite-lived intangible asset amortization periods					2 years							2 years
Minimum | Trademarks
Significant Accounting Policies [Line Items]
Finite-lived intangible asset amortization periods					5 years							5 years
Minimum | Short Term Leases
Significant Accounting Policies [Line Items]
Lessee, operating lease term					1 month							1 month
Minimum | Capitalized Software Development Costs
Significant Accounting Policies [Line Items]
Estimated useful life, years					3 years							3 years