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Restructuring Activities - Narrative (Details)
$ in Millions
Mar. 31, 2021
USD ($)
Employee retention, severance and benefits and lease termination costs  
Restructuring Cost and Reserve [Line Items]  
Costs incurred to date $ 9.6
Post-Divestiture Restructuring Plan  
Restructuring Cost and Reserve [Line Items]  
Incremental capital cost (up to) 7.0
Costs incurred to date 6.0
Restructuring cost capitalized 3.5
Post-Divestiture Restructuring Plan | Minimum  
Restructuring Cost and Reserve [Line Items]  
Costs expected to incur 11.0
Post-Divestiture Restructuring Plan | Maximum  
Restructuring Cost and Reserve [Line Items]  
Costs expected to incur 13.0
2020 Restructuring  
Restructuring Cost and Reserve [Line Items]  
Costs incurred to date 27.8
2020 Restructuring | Maximum  
Restructuring Cost and Reserve [Line Items]  
Costs expected to incur $ 33.0