Derivatives (Narrative) (Details) - USD ($)	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Jan. 02, 2021
Derivative [Line Items]
Net income	$ 153,418,000	$ 86,091,000
Commodity Contract [Member]
Derivative [Line Items]
Forward purchase amount	71,900,000
Cash Flow Hedging [Member]
Derivative [Line Items]
Cash flow hedge gain (loss) to be reclassified within 12 months	10,000,000.0
Net income	0
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Foreign Exchange Contract
Derivative [Line Items]
Asset Derivatives Fair Value	400,000		$ 11,600,000
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Corn Option
Derivative [Line Items]
Asset Derivatives Fair Value	(8,000,000.0)		(6,800,000)
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Soybean Meal
Derivative [Line Items]
Asset Derivatives Fair Value	$ 100,000		$ 400,000