XML 84 R70.htm IDEA: XBRL DOCUMENT v3.20.4
Goodwill and other identifiable intangible assets - Schedule of Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]    
Beginning balance $ 68.8 $ 67.6
Exchange difference 1.4 1.2
Ending balance 70.2 68.8
Gas Cylinders    
Goodwill [Roll Forward]    
Beginning balance 27.0 26.3
Exchange difference 0.9 0.7
Ending balance 27.9 27.0
Elektron    
Goodwill [Roll Forward]    
Beginning balance 41.8 41.3
Exchange difference 0.5 0.5
Ending balance $ 42.3 $ 41.8