Value Creation Plan (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Restructuring Cost and Reserve [Line Items]
Reversal of previously recognized stock-based compensation related to forfeited awards of terminated employees	$ 4.1		$ 0.7
Flexible Resealable Pouch And Nutrition Bar [Member]
Restructuring Cost and Reserve [Line Items]
Closing costs			1.3
Disposal of cost incurred for additional asset impairment loss			16.1
Wahpeton Roasting Facility [Member]
Restructuring Cost and Reserve [Line Items]
Proceeds from sale of lease receivables		$ 0.7
Costs incurred for remaining lease obligation to sublease rentals		0.7
San Bernardino Facility [Member]
Restructuring Cost and Reserve [Line Items]
Closing costs			0.6
Disposal of cost incurred for additional asset impairment loss			3.7
Global Ingredients [Member]
Restructuring Cost and Reserve [Line Items]
Other expense	0.2		3.9
Corporate Services [Member]
Restructuring Cost and Reserve [Line Items]
Other expense	4.3	0.2	1.8
Plant-Based Foods and Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Other expense	0.5	1.4	16.8
Fruit Based Foods and Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Other expense	$ 1.0	$ 0.1	$ 1.3