Segments - Assets by Reportable Segments (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets not allocated:
Cash and cash equivalents	$ 278.2	$ 561.0	$ 548.7
Non-current assets held for sale	0.0	1.5
Income tax receivables	17.1	28.8
Other receivables	80.8	83.7
Deferred taxes	138.2	138.4
Other	370.9	382.0
Total assets	6,117.0	6,229.3
Assets allocated to segments:
Assets allocated to segments:
Assets allocated to segments	5,211.6	5,013.3
Assets allocated to segments: | Food
Assets allocated to segments:
Assets allocated to segments	2,309.8	2,169.0
Assets allocated to segments: | Protective
Assets allocated to segments:
Assets allocated to segments	2,901.8	2,844.3
Assets not allocated:
Assets not allocated:
Cash and cash equivalents	278.2	561.0
Non-current assets held for sale	0.0	1.5
Income tax receivables	17.1	28.8
Other receivables	80.8	83.7
Deferred taxes	138.2	138.4
Other	391.1	402.6
Total assets	$ 6,117.0	$ 6,229.3