| Description of Business (Details) device in Millions, application_preload in Billions | 9 Months Ended | 
|---|---|
| Dec. 31, 2019  partnership  segment  device  application_preload | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Number of application pre-loads | application_preload | 3 | 
| Number of devices | device | 369 | 
| Number of Operator and OEM partnerships | partnership | 35 | 
| Number of reportable segments | segment | 1 | 
| X | ||||||||||
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- Definition Number of Application Preloads No definition available. 
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| X | ||||||||||
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- Definition Number of Devices No definition available. 
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| X | ||||||||||
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- Definition Number of Operator and OEM Partnerships No definition available. 
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| X | ||||||||||
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available. 
 | 
| X | ||||||||||
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- References No definition available. 
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