Revenue - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized that had been included in deferred revenue as of the beginning of the period	$ 124.3
Contract assets, current	11.5	$ 16.2
Contract assets, non-current	$ 9.4	$ 10.2