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Stock Incentive and Employee Benefit Plan (Additional Information) (Details) - USD ($)				3 Months Ended		9 Months Ended
	Jul. 01, 2024	Feb. 13, 2023	Oct. 17, 2022	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Jan. 17, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of option outstanding to purchase common stock				34,361,000		34,361,000		33,124,000
Common stock, shares outstanding				131,721,935		131,721,935		100,015,665
Options granted weighted-average grant date fair value						$ 0.81
Total intrinsic value of option exercise						$ 19,200
Stock-based compensation expenses						10,884,000	$ 10,813,000
Employee benefit plan contributions by employer						500,000	300,000
Stock issued for services, shares	10,000,000	4,000,000
Accrued legal fees				$ 0		$ 0
2022 Equity Incentive Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of option outstanding to purchase common stock				34,361,475		34,361,475
Common stock shares reserved for future issuance				20,129,644		20,129,644
2023 Inducement Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares available for grant									1,400,000
Stock-based compensation expenses				$ 3,700,000	$ 3,500,000	$ 10,900,000	10,800,000
Unrecognized compensation cost related to unvested stock option grants				$ 31,500,000		$ 31,500,000
Weighted average period over grant						2 years 7 months 6 days
2022 Employee Stock Purchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock shares reserved for future issuance				2,875,759		2,875,759
Stock-based compensation expenses				$ 74,200	$ 0	$ 196,300	$ 0
Shares issued under ESPP, shares						167,369
Purchase price of the common stock percentage			85.00%
2022 Employee Stock Purchase Plan | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock shares reserved for future issuance				4,476,601		4,476,601
Semnur 2024 Stock Option Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock shares reserved for future issuance				40,000,000		40,000,000

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