Capital Structure - Additional Information (Details) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Class Of Stock [Line Items]
Common stock, shares authorized	422,000,000	422,000,000
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Pre-combination Aeva preferred stock outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Public Warrants [Member]
Class Of Stock [Line Items]
Common Stock, Par or Stated Value Per Share	$ 11.5
Class of Warrant or Right, Outstanding	12,074,880
Private Warrants [Member]
Class Of Stock [Line Items]
Common Stock, Par or Stated Value Per Share	$ 11.5
Class of Warrant or Right, Outstanding	384,000