Segments - Reconciliation of Total Company Adjusted EBITDA to Net Earnings - Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	$ 53.3	$ 41.1	$ 132.5	$ 122.3
Depreciation and amortization adjustments	(0.1)	(0.1)	(1.1)	(0.4)
Depreciation, Depletion and Amortization, Including Allocated Share-Based Compensation Expense, Net Of Adjustments	53.2	41.0	131.4	121.9
Share-based incentive compensation	12.0	8.3	25.2	22.9
Restructuring charges	6.9	6.6	43.6	22.3
Depreciation and amortization
Segment Reporting Information [Line Items]
Share-based incentive compensation	12.0	8.3	25.2	23.6
Food Care
Segment Reporting Information [Line Items]
Restructuring charges	3.9	2.3	26.3	8.4
Food Care | Operating Segments
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	30.6	25.6	81.8	79.8
Product Care
Segment Reporting Information [Line Items]
Restructuring charges	3.0	4.3	17.3	13.9
Product Care | Operating Segments
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	$ 22.7	$ 15.5	$ 50.7	$ 42.5