Stockholders' Equity - Schedule of Outstanding Warrants (Detail)	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Historical TuHURA Common Stock Warrants [Member]
Outstanding | shares	10,592,387
Weighted average exercise price | $ / shares	$ 4.16
Historical TuHURA Common Stock Warrants [Member] | Minimum [Member]
Expiration dates	Feb. 01, 2025
Historical TuHURA Common Stock Warrants [Member] | Maximum [Member]
Expiration dates	Aug. 31, 2029
Historical Kintara Common Stock Warrants [Member]
Outstanding | shares	17,468
Weighted average exercise price | $ / shares	$ 1,362.41
Historical Kintara Common Stock Warrants [Member] | Minimum [Member]
Expiration dates	Mar. 01, 2025
Historical Kintara Common Stock Warrants [Member] | Maximum [Member]
Expiration dates	Apr. 30, 2027
Common Stock Warrants Issued to Financial Advisor [Member]
Outstanding | shares	297,029
Weighted average exercise price | $ / shares	$ 0.01
Expiration dates	Apr. 30, 2027