Business Segment Data - Mann Packing (Details) - USD ($) $ in Millions	3 Months Ended								10 Months Ended	12 Months Ended
	Dec. 27, 2019	Sep. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Sep. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Dec. 28, 2018	Dec. 27, 2019	Dec. 28, 2018	Dec. 29, 2017
Segment Reporting Information [Line Items]
Net sales	$ 1,025.2	$ 1,070.2	$ 1,239.4	$ 1,154.2	$ 1,045.9	$ 1,069.5	$ 1,272.4	$ 1,106.1		$ 4,489.0	$ 4,493.9	$ 4,085.9
Gross Profit	$ 36.3	$ 74.7	$ 96.3	$ 93.3	$ 42.4	$ 52.6	$ 78.3	$ 106.5		300.6	279.8	331.6
Fresh and Value-Added Products
Segment Reporting Information [Line Items]
Net sales										2,704.4	2,654.7	2,184.4
Gross Profit										194.7	190.0	213.4
Totals
Segment Reporting Information [Line Items]
Net sales										128.6	136.1	126.4
Gross Profit										8.8	5.7	4.8
North America
Segment Reporting Information [Line Items]
Net sales										$ 2,923.8	$ 2,871.3	$ 2,382.4
Mann Packing | North America | Fresh and Value-Added Products
Segment Reporting Information [Line Items]
Net sales									$ 488.6
Gross Profit									$ 36.0