Note 16 - Noncontrolling Interest (Details Textual) $ in Millions	6 Months Ended
Mar. 31, 2025 USD ($)
Bollinger Motors Inc. [Member]
Additional Investment Into Newly Issued Shares Of The Subsidiary, Value	$ 11

The value of the additional investment into the newly issued shares of the subsidiary.

No definition available.

Name:	muln_AdditionalInvestmentIntoNewlyIssuedSharesOfTheSubsidiaryValue
Namespace Prefix:	muln_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration