Acquisitions - Acquisitions Narrative (Details) - USD ($) $ in Millions			3 Months Ended		8 Months Ended	9 Months Ended
	Feb. 01, 2023	Feb. 02, 2022	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill			$ 2,913.3		$ 2,913.3	$ 2,913.3	$ 2,174.5
Food
Business Acquisition [Line Items]
Goodwill			1,262.8		1,262.8	1,262.8	$ 523.2
Liquibox
Business Acquisition [Line Items]
Percentage of shares acquired	100.00%
Acquisition purchase price paid	$ 1,169.2				1,169.2
Acquisition related costs			0.1			12.1
Goodwill	728.7		731.2		731.2	731.2
Allocation to deferred tax liability	$ 92.2		$ 92.2		$ 92.2	$ 92.2
Foxpak Flexibles Ltd.
Business Acquisition [Line Items]
Acquisition purchase price paid		$ 9.7
Goodwill		5.2
Allocation to intangible assets		2.7
Allocation to deferred tax liability		$ 0.3
Series of Individually Immaterial Business Acquisitions | Food
Business Acquisition [Line Items]
Acquisition purchase price paid				$ 14.9
Goodwill				$ 7.9