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July 2021 Restructuring Plan - Restructuring Reserves by Type of Cost (Details) - July 2021 Restructuring Plan
$ in Millions
 3 Months Ended
Mar. 31, 2022
USD ($)
Restructuring Reserve [Roll Forward]  
Restructuring reserve, beginning balance $ 7.7
Charges 0.0
Cash payments (3.9)
Restructuring reserve, ending balance 3.8
Total cumulative costs incurred as of March 31, 2022 19.8
Employee Related  
Restructuring Reserve [Roll Forward]  
Restructuring reserve, beginning balance 7.1
Charges 0.0
Cash payments (3.9)
Restructuring reserve, ending balance 3.2
Total cumulative costs incurred as of March 31, 2022 13.8
Other  
Restructuring Reserve [Roll Forward]  
Restructuring reserve, beginning balance 0.6
Charges 0.0
Cash payments 0.0
Restructuring reserve, ending balance 0.6
Total cumulative costs incurred as of March 31, 2022 $ 6.0