Business Combinations - Fair Value of Identifiable Intangible Assets Acquired (Details) - Mist $ in Millions	Apr. 01, 2019 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 102.0
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 81.0
Estimated useful life	5 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 15.0
Estimated useful life	5 years
Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 6.0
Estimated useful life	5 years