Segments - Assets Allocated by Reportable Segments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets not allocated:
Cash and cash equivalents	$ 561.0	$ 548.7	$ 262.4	$ 271.7
Assets held for sale	0.0	0.3
Deferred taxes	138.4	187.1
Other	382.0	355.8
Total	6,229.3	6,083.8
Operating Segments
Assets allocated to segments:
Allocated segment assets	5,013.3	4,814.5
Operating Segments | Food
Assets allocated to segments:
Allocated segment assets	2,169.0	2,019.1
Operating Segments | Protective
Assets allocated to segments:
Allocated segment assets	2,844.3	2,795.4
Segment Reconciling Items
Assets not allocated:
Cash and cash equivalents	561.0	548.7
Assets held for sale	1.5	0.3
Income tax receivables	28.8	71.2
Other receivables	83.7	69.5
Deferred taxes	138.4	187.1
Other	402.6	392.5
Total	$ 6,229.3	$ 6,083.8