Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Temporary equity, par value (in dollars per share)	$ 0.00001	$ 0.00001
Temporary equity, shares authorized (in shares)	0	86,815,192
Temporary equity, Shares issued (in shares)	0	73,914,149
Temporary equity, shares outstanding (in shares)	0	73,914,149
Temporary equity, liquidation preference	$ 0	$ 271,845,000
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares issued (in shares)	172,442,676	63,090,701
Common stock, shares outstanding (in shares)	172,442,676	63,090,701
Common stock, $0.0001 par value; 172,442,676 and 63,090,701 shares issued and outstanding as of September 30, 2022 and December 31, 2021, respectively	$ 18,000	$ 0
Total Forge Global Holdings, Inc. stockholders’ equity (deficit)	$ 332,215,000	$ (52,640,000)

Face amount or stated value per share of common stock.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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