Segments - Net Sales and Adjusted EBITDA by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 1,237.2	$ 1,218.5	$ 3,562.3	$ 3,492.2
Adjusted EBITDA from continuing operations	$ 259.3	$ 241.1	$ 772.4	$ 693.6
Adjusted EBITDA Margin	21.00%	19.80%	21.70%	19.90%
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA from continuing operations	$ (1.8)	$ (2.5)	$ 1.6	$ (7.5)
Food
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 704.6	$ 729.6	$ 2,068.1	$ 2,120.6
Adjusted EBITDA Margin	21.60%	21.90%	23.10%	21.60%
Food | Product Concentration Risk | Net Sales
Segment Reporting Information [Line Items]
As a % of Total Company net sales	57.00%	59.90%	58.10%	60.70%
Food | Operating Segments
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 704.6	$ 729.6	$ 2,068.1	$ 2,120.6
Adjusted EBITDA from continuing operations	152.4	159.6	477.8	458.1
Protective
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 532.6	$ 488.9	$ 1,494.2	$ 1,371.6
Adjusted EBITDA Margin	20.40%	17.20%	19.60%	17.70%
Protective | Product Concentration Risk | Net Sales
Segment Reporting Information [Line Items]
As a % of Total Company net sales	43.00%	40.10%	41.90%	39.30%
Protective | Operating Segments
Segment Reporting Information [Line Items]
Total Company Net Sales	$ 532.6	$ 488.9	$ 1,494.2	$ 1,371.6
Adjusted EBITDA from continuing operations	$ 108.7	$ 84.0	$ 293.0	$ 243.0