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GENERAL (Details Narrative) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 07, 2025 $ / shares shares | Jul. 03, 2025 USD ($) shares | Jun. 16, 2025 $ / shares shares | Jan. 15, 2025 $ / shares shares | Sep. 16, 2024 USD ($) shares | Sep. 04, 2024 USD ($) | Jul. 19, 2024 | Jul. 15, 2024 $ / shares shares | Jun. 27, 2024 USD ($) shares | Apr. 11, 2024 USD ($) | Oct. 03, 2023 $ / shares | Oct. 02, 2023 | Jul. 26, 2022 USD ($) $ / shares shares | Jul. 31, 2024 | May 31, 2022 USD ($) | May 31, 2022 AUD ($) | Mar. 31, 2024 USD ($) shares | Jun. 30, 2025 USD ($) $ / shares | Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) shares | Aug. 26, 2025 shares | Aug. 06, 2025 $ / shares shares | Aug. 01, 2025 USD ($) | Jun. 15, 2025 $ / shares shares | May 06, 2025 shares | Jan. 14, 2025 $ / shares shares | Dec. 31, 2024 € / shares | Sep. 11, 2024 shares | Aug. 24, 2024 USD ($) | Jul. 14, 2024 $ / shares shares | Jul. 10, 2024 shares | Jun. 30, 2024 shares | Jun. 21, 2024 shares | Feb. 01, 2024 shares | Sep. 19, 2023 USD ($) | Mar. 07, 2023 shares | Jan. 31, 2015
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  | 793 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 579 |  |  |  |  |  |  |  |  |  |  | 1,818 |  |  |  |  | 1,000,000 |
Par value per share | € / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 1 |  |  |  |  |  |  |  |  |  |
Percentage of interests acquired additional |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00%
Accumulated losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 106,000,000 | $ 82,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue of convertible instruments |  |  |  |  | $ 23,000 | $ 1,300,000 |  |  | $ 119,000 |  |  |  |  |  | $ 569,000 | $ 828 |  | 295.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short term loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,115,000 | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split |  |  | reverse split consolidated every 4.1 shares into one new ordinary share and was aimed at meeting Nasdaq’s minimum bid price requirement of $1.00 per share | reverse split consolidated every 28.5 shares into one new ordinary share and was aimed at meeting Nasdaq’s minimum bid price requirement of $1.00 per share |  |  |  | 75 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary share offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,875,000 |  |  |  |  |  |  |  |  |  |  | $ 1,500,000 |  |  |  |  |  |  |  |
Proceeds from issue of ordinary shares |  |  |  |  |  |  |  |  |  | $ 14,723,000 |  |  |  |  |  |  |  | $ 4,219,000 |  | $ 1,979,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21,000 |  |
Nonadjusting event [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares | 7.0 | 79,286 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  | 972,248,000 |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split | reverse split consolidated every 7.0 shares into one new ordinary share and was aimed at meeting Nasdaq’s minimum bid price requirement of $1.00 per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issue of ordinary shares |  | $ 2,656,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,750,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of outstanding shares | shares | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Security matters PTY ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Top of range [member] | Nonadjusting event [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Par value per share | $ / shares | $ 0.000000000000287 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bottom of range [member] | Nonadjusting event [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Par value per share | $ / shares | 0.00000000000041 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
True gold consortium pty ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interests acquired additional |  |  |  |  |  |  |  |  |  |  | 7.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding interests |  |  |  |  |  |  |  |  |  |  | 51.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional funding agreements [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Funding agreements [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured restructuring of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 747,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 194,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue of convertible instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non convertible notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short term loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lionheart [member] | Business combination agreement [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage of business combination |  |  |  |  |  |  |  |  |  |  |  |  | 97.58% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining funds in trust account |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,061,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
True gold consortium pty ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Par value per share | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 33.12 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interests acquired additional |  |  |  |  |  |  |  |  |  |  | 7.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding interests |  |  |  |  |  |  | 52.90% |  |  |  | 51.90% | 44.40% |  | 52.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  | 33,155,000 |  |  |  | 44,800,000 | 11,699,000 |  |  |  | 1 |  |  |  | 1,251 |  | 472,000 |  |  |  |  |  |  |  |  | 55,789 |  |  |  | 1,494 | 117 | 234 |  | 160,227 |
Share price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Par value per share | $ / shares |  |  | $ 0.000000000000041 | $ 4.70250014886352 |  |  |  | $ 0.165 |  |  |  |  |  |  |  |  |  | $ 0.000000000000287 |  |  |  |  |  | $ 0.00000000000001 |  | $ 0.165 |  |  |  | $ 0.0022 |  |  |  |  |  |  |
Minimum bid price | $ / shares |  |  | $ 1.00 | $ 1.00 |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issue of ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 527,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of outstanding shares | shares |  |  | 1,000,000 | 1,163,000 |  |  |  | 597,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 |  | 33,155,000 |  |  |  | 44,800,000 |  |  |  |  |  |  |
Ordinary shares [member] | Nonadjusting event [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Par value per share | $ / shares | 0.000000000000287 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.00000000000041 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum bid price | $ / shares | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of outstanding shares | shares | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares [member] | Security matters PTY ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 10.3624 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  | 1,163,000 |  |  |  | 597,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share price | $ / shares |  |  |  | $ 4.70250014886352 |  |  |  | $ 0.165 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share price | $ / shares |  |  |  | $ 0.165 |  |  |  | $ 0.0022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares [member] | Security matters PTY ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 10.3624 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Par value per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Deb issued. + References No definition available. + Details
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Namespace Prefix: | SMX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Issue of non convertible instruments. + References No definition available. + Details
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Namespace Prefix: | SMX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Minimum bid price. + References No definition available. + Details
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Namespace Prefix: | SMX_
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- Definition Redemption percentage of business combination. + References No definition available. + Details
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Namespace Prefix: | SMX_
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- Definition Remaining funds in trust account. + References No definition available. + Details
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- Definition Reverse stock split ratio description. + References No definition available. + Details
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Namespace Prefix: | SMX_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Secured restructuring of debt. + References No definition available. + Details
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Namespace Prefix: | SMX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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Namespace Prefix: | SMX_
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