XML 103 R77.htm IDEA: XBRL DOCUMENT v3.22.4
Restructuring and severance - charges (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]      
Expenses $ 3.5 $ 5.3 $ 11.8
Expenses incurred 9.6    
2017 restructuring program      
Restructuring Cost and Reserve [Line Items]      
Expenses 0.0 0.0 11.0
Expenses incurred 129.8    
Other      
Restructuring Cost and Reserve [Line Items]      
Expenses $ 3.5 $ 5.3 $ 0.8