Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Useful Lives (Details)	12 Months Ended
	Dec. 31, 2019
Capitalized internal-use software development costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	3 years
Data center equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	2 years
Data center equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	4 years
Office equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	5 years
Software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	3 years
Assets held under capital leases
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated life	5 years
Developed technology | Minimum
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	3 years
Developed technology | Maximum
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	7 years
Customer relationships | Minimum
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	2 years
Customer relationships | Maximum
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	8 years
Supplier relationships | Minimum
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	2 years
Supplier relationships | Maximum
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	5 years
Trade names
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	5 years
Patent
Property, Plant and Equipment [Line Items]
Intangible assets, estimated life	20 years