Segments - Reconciliation of Total Company Adjusted EBITDA to Net Earnings - Expenses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	$ 38.1	$ 40.8	$ 79.2	$ 81.2
Depreciation and amortization adjustments	(0.1)	(0.1)	(1.0)	(0.3)
Depreciation, Depletion and Amortization, Including Allocated Share-Based Compensation Expense, Net Of Adjustments	38.0	40.7	78.2	80.9
Share-based incentive compensation	4.8	7.1	13.2	14.6
Restructuring charges	29.3	7.1	36.7	15.7
Depreciation and amortization
Segment Reporting Information [Line Items]
Share-based incentive compensation	4.8	7.7	13.2	15.3
Food Care
Segment Reporting Information [Line Items]
Restructuring charges	18.6	1.5	22.4	6.1
Food Care | Operating Segments
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	25.0	27.2	51.2	54.1
Product Care
Segment Reporting Information [Line Items]
Restructuring charges	10.7	5.6	14.3	9.6
Product Care | Operating Segments
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	$ 13.1	$ 13.6	$ 28.0	$ 27.1