Net Loss per Share - Reconciliation of the Numerator and Denominator Used in the Calculation of Basic and Diluted Net Loss per Share of Class A Common Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net loss	$ (5,774)	$ (9,424)
Less: Net loss attributable to noncontrolling interests	(1,275)	(2,417)
Net loss attributable to common shareholders of vTv Therapeutics Inc., diluted	(4,499)	(7,007)
Net loss attributable to common shareholders of vTv Therapeutics Inc., basic	$ (4,499)	$ (7,007)
Class A Common Stock
Denominator:
Weighted-average number of vTv Therapeutics Inc. Class A Common Stock, basic (in shares)	81,483,600	66,942,777
Weighted-average number of vTv Therapeutics Inc. Class A Common Stock, diluted (in shares)	81,483,600	66,942,777
Net loss per share of vTv Therapeutics Inc. Class A Common Stock, basic (in usd per share)	$ (0.06)	$ (0.10)
Net loss per share of vTv Therapeutics Inc. Class A Common Stock, diluted (in usd per share)	$ (0.06)	$ (0.10)