Summary of Significant Accounting Policies - Schedule of Asset’s Estimated Useful Life (Details)	Sep. 30, 2025
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Useful life	5 years
Machinery, tools and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Useful life	5 years
Computer and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Useful life	5 years
Internal-use Software [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Useful life	3 years
Internal-use Software [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Useful life	5 years
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Useful life	7 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Useful Life, Term, Description	Shorter of 3 years or lease term

Cyngn Inc. 10-Q