Acquisition and Divestiture Activity - Narrative (Details) - USD ($)			3 Months Ended			11 Months Ended	12 Months Ended
	Feb. 01, 2023	Feb. 02, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Nov. 01, 2021
Business Acquisition [Line Items]
Goodwill					$ 2,189,400,000	$ 2,892,500,000	$ 2,892,500,000	$ 2,174,500,000	$ 2,189,400,000
Identifiable intangible assets, net			$ 0
Gain on sale of business							0	0	45,300,000
Taxes on net gain on sale							90,400,000	238,000,000.0	225,000,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]					Gain (Loss) On Disposition Of Businesses And Property And Equipment
Reflectix, Inc | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Protective
Business Acquisition [Line Items]
Proceeds from sale of businesses					$ 82,500,000
Gain on sale of business				$ 400,000	$ 45,300,000
Disposal group, net carrying value										$ 35,800,000
Disposal group, inventory										6,800,000
Disposal group, trade receivable										6,600,000
Disposal group, property, plant and equipment										1,000,000
Disposal group, goodwill										$ 23,200,000
Taxes on net gain on sale									$ 17,300,000
Liquibox
Business Acquisition [Line Items]
Percentage of acquired equity interest	100.00%
Purchase price	$ 1,170,000,000
Foxpak Flexibles Ltd.
Business Acquisition [Line Items]
Purchase price		$ 9,700,000
Goodwill		5,200,000
Identifiable intangible assets, net		2,700,000
Deferred tax liabilities		$ 300,000
Liquibox
Business Acquisition [Line Items]
Purchase price	1,169,200,000					1,167,100,000
Transaction expenses							12,000,000	$ 7,000,000
Goodwill	728,700,000					699,500,000	699,500,000
Deferred tax liabilities	$ 92,200,000					$ 57,100,000	$ 57,100,000
Series of Individually Immaterial Business Acquisitions | Food
Business Acquisition [Line Items]
Purchase price			14,900,000
Goodwill			$ 7,900,000