Revenue Recognition - Remaining Performance Obligation (Details) $ in Millions	Jan. 31, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 604.1
Billed consideration
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	230.5
Unbilled consideration
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 373.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-02-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation percentage	62.00%
Revenue remaining performance obligation, expected timing of satisfaction period	12 months