Other Financial Information - Revenue (Details) $ in Millions	Mar. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 1,276.3
Product
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	121.0
Service
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	1,155.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	867.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01 | Product
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 100.1
Revenue recognition expected by period, satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01 | Service
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 767.3
Revenue recognition expected by period, satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 341.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 | Product
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 18.5
Revenue recognition expected by period, satisfaction period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 | Service
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 322.7
Revenue recognition expected by period, satisfaction period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 67.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01 | Product
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 2.4
Revenue recognition expected by period, satisfaction period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01 | Service
Disaggregation of Revenue [Line Items]
Revenue recognition expected by period	$ 65.3
Revenue recognition expected by period, satisfaction period