Segments - Net Sales and Adjusted EBITDA by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 1,151.2	$ 1,161.0	$ 2,325.1	$ 2,273.7
Adjusted EBITDA from continuing operations	$ 259.9	$ 236.7	$ 513.1	$ 452.5
Adjusted EBITDA Margin	22.60%	20.40%	22.10%	19.90%
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA from continuing operations	$ (0.7)	$ (2.9)	$ 3.4	$ (5.0)
Food
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 673.2	$ 711.0	$ 1,363.5	$ 1,391.0
Adjusted EBITDA Margin	25.10%	21.90%	23.90%	21.50%
Food | Product Concentration Risk | Net Sales
Segment Reporting Information [Line Items]
As a % of Total Company net sales	58.50%	61.20%	58.60%	61.20%
Food | Operating Segments
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 673.2	$ 711.0	$ 1,363.5	$ 1,391.0
Adjusted EBITDA from continuing operations	169.1	155.6	325.4	298.5
Protective
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 478.0	$ 450.0	$ 961.6	$ 882.7
Adjusted EBITDA Margin	19.10%	18.70%	19.20%	18.00%
Protective | Product Concentration Risk | Net Sales
Segment Reporting Information [Line Items]
As a % of Total Company net sales	41.50%	38.80%	41.40%	38.80%
Protective | Operating Segments
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 478.0	$ 450.0	$ 961.6	$ 882.7
Adjusted EBITDA from continuing operations	$ 91.5	$ 84.0	$ 184.3	$ 159.0