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Redeemable Noncontrolling Interest - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Noncontrolling Interest [Line Items]
Redemption amount of noncontrolling interest	$ 10.7	$ 16.6
Class A Common Stock
Noncontrolling Interest [Line Items]
Number of days used to determine exchange value based on weighted average price of Class A common stock	20 days
Class A Common Stock | Exchange of Redeemable Non controlling Interest To Class A Common Stock
Noncontrolling Interest [Line Items]
Stock conversion ratio	1
vTv Therapeutics LLC
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership percentage	22.10%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage of non voting economic interest.

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- Definition

Period used to determine exchange value based on weighted average price of Class A common stock.

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- Definition

Redeemable non controlling interest exchange agreement stock conversion ratio.

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- Definition

Redeemable noncontrolling interest temporary equity redemption value.

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