Commitments and Contingencies - Leases Additional Information (Details)	Sep. 30, 2019
Minimum | Corporate offices, data centers, and R&D facilities
Lessee, Lease, Description [Line Items]
Lease terms	1 year
Minimum | Vehicles and various office equipment
Lessee, Lease, Description [Line Items]
Lease terms	1 year
Maximum | Corporate offices, data centers, and R&D facilities
Lessee, Lease, Description [Line Items]
Lease terms	11 years
Maximum | Vehicles and various office equipment
Lessee, Lease, Description [Line Items]
Lease terms	5 years