Derivatives (Narrative) (Details) - USD ($)	3 Months Ended						9 Months Ended
	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Oct. 02, 2021	Sep. 26, 2020	Jan. 02, 2021
Derivative [Line Items]
Net income	$ 148,206,000	$ 198,069,000	$ 153,418,000	$ 101,605,000	$ 66,495,000	$ 86,091,000	$ 499,693,000	$ 254,191,000
Commodity Contract [Member]
Derivative [Line Items]
Forward purchase amount	118,800,000						118,800,000
Cash Flow Hedging [Member]
Derivative [Line Items]
Cash flow hedge gain (loss) to be reclassified within 12 months							14,300,000
Net income							0
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Foreign Exchange Contract
Derivative [Line Items]
Asset Derivatives Fair Value	2,500,000						2,500,000		$ 11,600,000
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Corn Option
Derivative [Line Items]
Asset Derivatives Fair Value	(2,200,000)						(2,200,000)		(6,800,000)
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Soybean Meal
Derivative [Line Items]
Asset Derivatives Fair Value	$ 0						$ 0		$ 400,000