Note 8 - Warrants and Other Derivative Liabilities and Fair Value Measurements (Details Textual)											1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 04, 2025	Aug. 01, 2025	Jun. 02, 2025	Apr. 11, 2025	Feb. 18, 2025	Sep. 17, 2024	May 14, 2024	Dec. 21, 2023	Aug. 11, 2023	May 04, 2023	Aug. 31, 2025	Jun. 30, 2025 USD ($) shares	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) shares	Jun. 30, 2024 USD ($)	Aug. 14, 2025	Feb. 28, 2025 $ / shares	Sep. 30, 2024 USD ($)
Warrants and Rights Outstanding												$ 6,605,000,000		$ 6,605,000,000
Gain (Loss) on Exchange of Warrants												0	$ 0	(57,770,454)	$ 0
Financing Costs, Initial Recognition of Warrants												$ 33,181,991	$ 17,914,480	70,366,183	$ 17,914,480
Class of Warrant or Right, Exercised During Period, Fair Value														$ 112,400,000
Stock Issued During Period, Shares, Warrant Exercies (in shares) \| shares														80,911
Class of Warrant or Right, Outstanding (in shares) \| shares
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares												101.1		101.1
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	250		100	100	60	100		100	9	25
Reverse Stock Split [Member] \| Subsequent Event [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		250									250
Senior Secured Convertible Notes Warrants [Member]
Warrants and Rights Outstanding, Term (Year)							5 years
Warrants and Rights, Value, Conversion Price, Percent							200.00%
Class of Warrants or Rights, Exercise Price, Closing Share Price Percentage							105.00%
Beneficial Owner, Ownership Percentage							9.90%					9.90%		9.90%
Warrants and Rights, Exercise Price, Conversion Price, Percent							250.00%
Warrants and Rights, Percentage of Warrants Issued							72.00%
Warrants and Rights Outstanding																		$ 79,700,000
Proceeds from Issuance of Warrants														$ 62,500,000
Class of Warrant or Right, Issued During Period, Fair Value														134,700,000
Financing Costs, Initial Recognition of Warrants														70,400,000
Senior Secured Convertible Notes Warrants [Member] \| Subsequent Event [Member]
Warrants and Rights Outstanding, Term (Year)																5 years
Senior Secured Convertible Notes Warrants [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input							1.35
New Exchanged Warrants [Member]
Warrants and Rights Outstanding, Term (Year)																	5 years
Class of Warrant or Right, Exercise Floor Price, Cashless Exercise (in dollars per share) \| $ / shares																	$ 0.01
Gain (Loss) on Exchange of Warrants												$ (57,800,000)
Cashless Basis Warrants [Member]
Warrants and Rights Outstanding												$ 101,100,000		$ 101,100,000
Class of Warrant or Right, Outstanding (in shares) \| shares												12,934.3443		12,934.3443
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares												936,399		936,399

BOLLINGER INNOVATIONS, INC. 10-Q/A