{
  "report-package": "969500Y7G9TY7Y24GN07-2021-12-31AR.zip",
  "date": "2021-12-31",
  "lei": "969500Y7G9TY7Y24GN07",
  "system": "ESEF",
  "country": "FR",
  "langs": [
    "fr"
  ],
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  "xbrl-json": "969500Y7G9TY7Y24GN07-2021-12-31AR.json",
  "sha256sum": "e7599a77fc507f80d3a96c72ae3d4e7cc85ebc0d6a77cc5a857805b8afa08a32",
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    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital in link role http://alten.com/role/CashFlow reported sum 389,006,000 computed sum 389,005,000 context ctx-1 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:CashFlowsFromUsedInOperatingActivities in link role http://alten.com/role/CashFlow reported sum 231,651,000 computed sum 231,650,000 context ctx-1 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:CashFlowsFromUsedInOperatingActivities in link role http://alten.com/role/CashFlow reported sum 307,437,000 computed sum 307,436,000 context ctx-2 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:CashFlowsFromUsedInFinancingActivities in link role http://alten.com/role/CashFlow reported sum -91,790,000 computed sum -91,791,000 context ctx-1 unit eur unreportedContributingItems none"
    },
    {
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      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges in link role http://alten.com/role/CashFlow reported sum 22,236,000 computed sum 22,237,000 context ctx-1 unit eur unreportedContributingItems none"
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    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges in link role http://alten.com/role/CashFlow reported sum 87,038,000 computed sum 87,037,000 context ctx-2 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:IncreaseDecreaseThroughTransactionsWithOwners in link role http://alten.com/role/ChangesinEquity reported sum -16,122,000 computed sum -16,123,000 context ctx-39 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:IncreaseDecreaseThroughTransactionsWithOwners in link role http://alten.com/role/ChangesinEquity reported sum 81,402,000 computed sum 81,401,000 context ctx-31 unit eur unreportedContributingItems ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:ProfitLoss in link role http://alten.com/role/ComprehensiveIncome reported sum 207,889,000 computed sum 207,890,000 context ctx-1 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:ProfitLoss in link role http://alten.com/role/ComprehensiveIncome reported sum 97,786,000 computed sum 97,787,000 context ctx-2 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:CurrentAssets in link role http://alten.com/role/FinancialPosition reported sum 1,449,636,000 computed sum 1,449,637,000 context ctx-3 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:CurrentAssets in link role http://alten.com/role/FinancialPosition reported sum 1,137,670,000 computed sum 1,137,671,000 context ctx-4 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:EquityAttributableToOwnersOfParent in link role http://alten.com/role/FinancialPosition reported sum 1,421,427,000 computed sum 1,421,426,000 context ctx-3 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:EquityAttributableToOwnersOfParent in link role http://alten.com/role/FinancialPosition reported sum 1,213,604,000 computed sum 1,213,605,000 context ctx-4 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:NoncurrentLiabilities in link role http://alten.com/role/FinancialPosition reported sum 287,842,000 computed sum 287,843,000 context ctx-3 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:CurrentLiabilities in link role http://alten.com/role/FinancialPosition reported sum 920,636,000 computed sum 920,635,000 context ctx-3 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:EquityAndLiabilities in link role http://alten.com/role/FinancialPosition reported sum 2,629,533,000 computed sum 2,629,534,000 context ctx-3 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:EquityAndLiabilities in link role http://alten.com/role/FinancialPosition reported sum 2,152,611,000 computed sum 2,152,612,000 context ctx-4 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ALT:ProfitLossFromOrdinaryOperatingActivitiesBeforeShareBasedPaymentTransactions in link role http://alten.com/role/IncomeStatement reported sum 319,866,000 computed sum 319,865,000 context ctx-1 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ALT:ProfitLossFromOrdinaryOperatingActivitiesBeforeShareBasedPaymentTransactions in link role http://alten.com/role/IncomeStatement reported sum 142,445,000 computed sum 142,446,000 context ctx-2 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:ProfitLossFromOperatingActivities in link role http://alten.com/role/IncomeStatement reported sum 119,241,000 computed sum 119,240,000 context ctx-2 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ALT:ProfitLossFromConsolidatedCompanies in link role http://alten.com/role/IncomeStatement reported sum 96,367,000 computed sum 96,366,000 context ctx-2 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:ProfitLoss in link role http://alten.com/role/IncomeStatement reported sum 207,889,000 computed sum 207,890,000 context ctx-1 unit eur unreportedContributingItems none"
    },
    {
      "sev": "INCONSISTENCY",
      "code": "xbrl.5.2.5.2:calcInconsistency",
      "msg": "Calculation inconsistent from ifrs-full:ProfitLoss in link role http://alten.com/role/IncomeStatement reported sum 97,786,000 computed sum 97,787,000 context ctx-2 unit eur unreportedContributingItems none"
    },
    {
      "sev": "WARNING",
      "code": "formula:assertionUnsatisfied",
      "msg": "man_NameOfParentEntity"
    },
    {
      "sev": "WARNING",
      "code": "formula:assertionUnsatisfied",
      "msg": "positive, \n$pos: ifrs-full:IssueOfEquity context ctx-13\n"
    },
    {
      "sev": "WARNING",
      "code": "formula:assertionUnsatisfied",
      "msg": "positive, \n$pos: ifrs-full:IssueOfEquity context ctx-31\n"
    },
    {
      "sev": "WARNING",
      "code": "formula:assertionUnsatisfied",
      "msg": "man_ExplanationOfChangeInNameOfReportingEntityOrOtherMeansOfIdentificationFromEndOfPrecedingReportingPeriod"
    },
    {
      "sev": "WARNING",
      "code": "formula:assertionUnsatisfied",
      "msg": "man_NameOfUltimateParentOfGroup"
    }
  ],
  "added": "2022-05-03"
}