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Convertible Promissory Notes and Warrant Agreements (Details) - USD ($) | Dec. 31, 2020 | Sep. 30, 2020
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Debt Disclosure [Abstract] |  |
Paulson convertible notes, principal |  | $ 546,000
Accrued interest |  | 63,458
Fair value adjustments |  | 397,748
Total |  | $ 1,007,206

X
- Definition Amount of interest payable on debt, including, but not limited to, trade payables. + References No definition available. + Details
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Namespace Prefix: | nmtc_
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Balance Type: | credit
Period Type: | instant

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- Definition Convertible notes outstanding principal. + References No definition available. + Details
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Namespace Prefix: | nmtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Including the current and noncurrent portions, at fair value value as of the balance sheet date of a written promise to pay a note, initially due within one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References No definition available. + Details
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Namespace Prefix: | nmtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value in excess of principal and accrued interest related to debt instrument payable. + References No definition available. + Details
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Namespace Prefix: | nmtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration