Allowance for Credit Losses - Allowance for Doubtful Accounts and Related Financing Receivables (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 25, 2020	Sep. 27, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for uncollectible amounts	$ (1.2)
Advances to Growers
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period(1)	2.3	$ 2.8
Provision for uncollectible amounts	(0.1)	0.0
Deductions to allowance related to write-offs	(0.1)	0.0
Balance, end of period	$ 2.1	$ 2.8