Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Remaining Performance Obligations (Narrative) (Details)

v3.21.2
Revenue Recognition - Remaining Performance Obligations (Narrative) (Details)
$ in Millions
Sep. 30, 2021
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, amount $ 1,253.4
Billed consideration  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, amount 484.1
Unbilled consideration  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, amount $ 769.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, percentage 57.00%
Remaining performance obligation, expected timing of satisfaction, period 12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, percentage 43.00%
Remaining performance obligation, expected timing of satisfaction, period