v3.26.1

Common Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions					1 Months Ended	3 Months Ended
	Mar. 26, 2026	Dec. 23, 2025	Dec. 17, 2025	Mar. 27, 2025	Nov. 30, 2025	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Class of Stock [Line Items]
Options exercised						90,735
Common stock remaining available unallocated amount						$ 94.7		$ 94.7
Common Stock
Class of Stock [Line Items]
Options exercised						90,735	3,955
Shares issued		704,499
IPO
Class of Stock [Line Items]
Aggregate offering price of shares of its common stock, shares of its preferred stock, debt securities, warrants, rights, units and/or depositary shares	$ 300.0			$ 250.0
ATM Prospectus \| Maximum
Class of Stock [Line Items]
Aggregate offering price of shares of its common stock, shares of its preferred stock, debt securities, warrants, rights, units and/or depositary shares	$ 100.0			$ 50.0
ATM Facility
Class of Stock [Line Items]
Shares issued					2,477,100
Proceeds from issuance of common stock under the ATM Facility, net of agent's fees					$ 16.4
Underwriters option to purchase
Class of Stock [Line Items]
Shares issued			13,333,333
Purchase price per share						$ 7.5
Proceeds from sale of stock			$ 98.7
Purchase of Additional Shares of Common Stock			1,999,999

Common stock remaining available unallocated amount.

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Kyverna Therapeutics, Inc. 10-Q