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Revenue (Remaining Performance Obligations - Timing) (Details)
$ in Millions
Jun. 30, 2021
USD ($)
Revenue from Contract with Customer [Abstract]  
Remaining Performance Obligations $ 1,466.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01  
Revenue from Contract with Customer [Abstract]  
Remaining Performance Obligations $ 837.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining Performance Obligations, performance period 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Revenue from Contract with Customer [Abstract]  
Remaining Performance Obligations $ 376.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining Performance Obligations, performance period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01  
Revenue from Contract with Customer [Abstract]  
Remaining Performance Obligations $ 107.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining Performance Obligations, performance period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01  
Revenue from Contract with Customer [Abstract]  
Remaining Performance Obligations $ 146.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining Performance Obligations, performance period