Segments - Reconciliation of U.S. GAAP Net Earnings to Non-U.S. GAAP Total Company Adjusted EBITDA Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	$ 267.5	$ 236.8	$ 232.2
Depreciation and amortization, net of adjustments	239.6	236.8	232.2
Share-based incentive compensation	34.2	52.3	45.8
Restructuring and other charges	15.6	12.1	14.5
Liquibox
Segment Reporting Information [Line Items]
Liquibox intangible amortization	(27.9)	0.0	0.0
Food
Segment Reporting Information [Line Items]
Restructuring and other charges	8.2	8.3	7.2
Food | Operating Segments
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	175.7	137.1	129.1
Protective
Segment Reporting Information [Line Items]
Restructuring and other charges	7.4	3.8	7.3
Protective | Operating Segments
Segment Reporting Information [Line Items]
Total Company depreciation and amortization	$ 91.8	$ 99.7	$ 103.1