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Discontinued Operations - Narrative (Details) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 USD ($) | Nov. 30, 2020 USD ($) | Aug. 31, 2020 USD ($) | Feb. 28, 2023 USD ($) | Feb. 28, 2022 USD ($) | Feb. 28, 2021 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Proceeds from divestiture |  |  |  | $ 106,808 | $ 0 | $ 12,444
Loss on disposal of business |  |  |  | 0 | 640 | 3,080
Discontinued Operations, Disposed of by Sale | AZZ Infrastructure Solutions |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Loss on disposal | $ 159,900 |  |  | 159,910 | $ 0 | 0
Proceeds from divestiture | 108,000 |  |  |  |  |
Proceeds funded by committed debt financing | $ 120,000 |  |  |  |  |
Disposal group, including discontinued operation, consideration |  |  |  | $ 27,800 |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Galvabar |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Proceeds from divestiture |  |  |  |  |  | 8,300
Loss on disposal of business |  |  |  |  |  | 1,200
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Azz SMS, LLC ("SMS") |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Proceeds from divestiture |  |  |  |  |  | $ 4,100
Loss on disposal of business |  | $ 1,900 |  |  |  |
Impairment charges from divestiture |  |  | $ 900 |  |  |
AIS Joint Venture |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Ownership percentage of investment | 40.00% |  |  |  |  |
AIS Joint Venture | AZZ Infrastructure Solutions |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Quoted enterprise value | $ 300,000 |  |  |  |  |
AIS Joint Venture | Discontinued Operations, Disposed of by Sale | AZZ Infrastructure Solutions |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Percentage of investment sold | 0.60 |  |  |  |  |

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