Other Financial Information - Revenue, Remaining Performance Obligation (Details) $ in Millions	Dec. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 1,299.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	875.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	349.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	75.9
Product
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	105.5
Product | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 85.4
Revenue recognition expected by period, satisfaction period	1 year
Product | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 17.0
Revenue recognition expected by period, satisfaction period	2 years
Product | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 3.1
Revenue recognition expected by period, satisfaction period
Service
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 1,194.4
Service | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 789.6
Revenue recognition expected by period, satisfaction period	1 year
Service | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 332.0
Revenue recognition expected by period, satisfaction period	2 years
Service | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 72.8
Revenue recognition expected by period, satisfaction period