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Patent and Technology License Agreements (Details) - USD ($)		9 Months Ended		12 Months Ended
	Oct. 06, 2020	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2021
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Fee expense (in Dollars)		$ 90,000	$ 90,000
Annual minimum royalty payment (in Dollars)		100,000
Increasing annual royalties (in Dollars)		25,000
Payable amount to NAT (in Dollars)		$ 1,100,000
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Patent and Technology License Agreements [Line Items]
Royalty rate		15.00%
Increasing annual royalties (in Dollars)		$ 150,000
Patent and Technology License Agreement – Mino-Lok [Member] \| Royalties [Member] \| Minimum [Member]
Patent and Technology License Agreements [Line Items]
Royalty rate		2.00%
Patent and Technology License Agreement – Mino-Lok [Member] \| Royalties [Member] \| Maximum [Member]
Patent and Technology License Agreements [Line Items]
Royalty rate		7.00%
License Agreement Eterna [Member]
Patent and Technology License Agreements [Line Items]
Obligated pay amount (in Dollars)		$ 51,000,000
Revenue percentage		50.00%
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Patent and Technology License Agreements [Line Items]
Minority equity interest	25.00%
License Agreement Eterna [Member] \| Minimum [Member]
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Patent and Technology License Agreements [Line Items]
Royalty rate		8.00%
License Agreement with Eisai [Member]
Patent and Technology License Agreements [Line Items]
Upfront payment (in Dollars)		$ 40,000,000
Commercial sales milestones (in Dollars)		$ 300,000,000
Net sales percentage		50.00%
Paying an extension fee (in Dollars)		$ 10,000,000
License Agreement with Eisai [Member] \| License Agreement [Member]
Patent and Technology License Agreements [Line Items]
License agreement development, description		Under the license agreement, Eisai is to receive a $6.0 million development milestone payment upon initial approval and additional commercial milestone payments related to the achievement of net product sales thresholds (which increases to $7 million in the event we have exercised our option to add India to the licensed territory prior to FDA approval) and an aggregate of up to $22 million related to the achievement of net product sales thresholds. Citius Oncology was required to reimburse Eisai for up to $2.65 million of its costs to complete the Phase 3 pivotal clinical trial for LYMPHIR for the CTCL indication and reimburse Eisai for all reasonable costs associated with the preparation of a Biologics License Application (“BLA”) for LYMPHIR.
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Patent and Technology License Agreements [Line Items]
Royalty rate		15.00%
Development milestone payments (in Dollars)		$ 70,000,000
License Agreement with Eisai [Member] \| Dr. Reddy’s Laboratories, Ltd [Member]
Patent and Technology License Agreements [Line Items]
Development milestone payments (in Dollars)		$ 40,000,000
License Agreement with Eisai [Member] \| Royalties [Member] \| Minimum [Member]
Patent and Technology License Agreements [Line Items]
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License Agreement with Eisai [Member] \| Royalties [Member] \| Maximum [Member]
Patent and Technology License Agreements [Line Items]
Royalty rate		15.00%
NoveCite [Member] \| License Agreement Eterna [Member]
Patent and Technology License Agreements [Line Items]
Research and development expense (in Dollars)				$ 5,000,000
Percentage of ownership additional shares	25.00%
License Agreement [Member] \| License Agreement Eterna [Member]
Patent and Technology License Agreements [Line Items]
Outstanding equity	75.00%