<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>169</ContextCount>
  <ElementCount>197</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>40</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>9952151 - Statement - Condensed Consolidated Balance Sheet</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedBalanceSheet</Role>
      <ShortName>Condensed Consolidated Balance Sheet</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>9952152 - Statement - Condensed Consolidated Balance Sheet (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedBalanceSheetParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheet (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>9952153 - Statement - Condensed Consolidated Statement of Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedStatementofIncome</Role>
      <ShortName>Condensed Consolidated Statement of Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>9952154 - Statement - Condensed Consolidated Statement of Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedStatementofComprehensiveIncome</Role>
      <ShortName>Condensed Consolidated Statement of Comprehensive Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>9952155 - Statement - Condensed Consolidated Statement of Comprehensive Income (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedStatementofComprehensiveIncomeParenthetical</Role>
      <ShortName>Condensed Consolidated Statement of Comprehensive Income (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>9952156 - Statement - Condensed Consolidated Statement of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedStatementofCashFlows</Role>
      <ShortName>Condensed Consolidated Statement of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>9952157 - Statement - Condensed Consolidated Statement of Shareholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedStatementofShareholdersEquity</Role>
      <ShortName>Condensed Consolidated Statement of Shareholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>9952158 - Statement - Condensed Consolidated Statement of Shareholders' Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/CondensedConsolidatedStatementofShareholdersEquityParenthetical</Role>
      <ShortName>Condensed Consolidated Statement of Shareholders' Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>9952159 - Disclosure - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/BasisofPresentation</Role>
      <ShortName>Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>9952160 - Disclosure - Restaurant Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RestaurantInformation</Role>
      <ShortName>Restaurant Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>9952161 - Disclosure - Per Common Share Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/PerCommonShareInformation</Role>
      <ShortName>Per Common Share Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>9952162 - Disclosure - Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RecentAccountingPronouncements</Role>
      <ShortName>Recent Accounting Pronouncements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>9952164 - Disclosure - Restructuring</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/Restructuring</Role>
      <ShortName>Restructuring</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>9952165 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>9952166 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>9952167 - Disclosure - Financial Instruments and Hedging Activities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivities</Role>
      <ShortName>Financial Instruments and Hedging Activities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>9952168 - Disclosure - Franchise Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FranchiseArrangements</Role>
      <ShortName>Franchise Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>9952169 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/SegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>9952171 - Disclosure - Investments, Equity Method and Joint Ventures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/InvestmentsEquityMethodandJointVentures</Role>
      <ShortName>Investments, Equity Method and Joint Ventures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>9955511 - Disclosure - Basis of Presentation (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/BasisofPresentationPolicies</Role>
      <ShortName>Basis of Presentation (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/RecentAccountingPronouncements</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>9955512 - Disclosure - Recent Accounting Pronouncements (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RecentAccountingPronouncementsPolicies</Role>
      <ShortName>Recent Accounting Pronouncements (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/RecentAccountingPronouncements</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>9955514 - Disclosure - Restaurant Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RestaurantInformationTables</Role>
      <ShortName>Restaurant Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/RestaurantInformation</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>9955515 - Disclosure - Restructuring (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RestructuringTables</Role>
      <ShortName>Restructuring (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/Restructuring</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>9955517 - Disclosure - Financial Instruments and Hedging Activities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivitiesTables</Role>
      <ShortName>Financial Instruments and Hedging Activities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivities</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>9955518 - Disclosure - Franchise Arrangements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FranchiseArrangementsTables</Role>
      <ShortName>Franchise Arrangements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/FranchiseArrangements</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>9955519 - Disclosure - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/SegmentInformationTables</Role>
      <ShortName>Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/SegmentInformation</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>9955522 - Disclosure - Restaurant Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RestaurantInformationDetails</Role>
      <ShortName>Restaurant Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/RestaurantInformationTables</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>9955523 - Disclosure - Per Common Share Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/PerCommonShareInformationDetails</Role>
      <ShortName>Per Common Share Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/PerCommonShareInformation</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>9955525 - Disclosure - Restructuring (Additional Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RestructuringAdditionalInformationDetails</Role>
      <ShortName>Restructuring (Additional Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/RestructuringTables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>9955526 - Disclosure - Restructuring (Summary of Accrued Expenses Balance) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/RestructuringSummaryofAccruedExpensesBalanceDetails</Role>
      <ShortName>Restructuring (Summary of Accrued Expenses Balance) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/RestructuringTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>9955527 - Disclosure - Income Taxes (Additional Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/IncomeTaxesAdditionalInformationDetails</Role>
      <ShortName>Income Taxes (Additional Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/IncomeTaxes</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>9955529 - Disclosure - Fair Value Measurements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FairValueMeasurementsDetails</Role>
      <ShortName>Fair Value Measurements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/FairValueMeasurements</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>9955530 - Disclosure - Financial Instruments and Hedging Activities (Fair Values of Derivative Instruments Included on Consolidated Balance Sheet) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivitiesFairValuesofDerivativeInstrumentsIncludedonConsolidatedBalanceSheetDetails</Role>
      <ShortName>Financial Instruments and Hedging Activities (Fair Values of Derivative Instruments Included on Consolidated Balance Sheet) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9955531 - Disclosure - Financial Instruments and Hedging Activities (Derivatives Pretax Amounts Affecting Income and Other Comprehensive Income) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivitiesDerivativesPretaxAmountsAffectingIncomeandOtherComprehensiveIncomeDetails</Role>
      <ShortName>Financial Instruments and Hedging Activities (Derivatives Pretax Amounts Affecting Income and Other Comprehensive Income) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9955532 - Disclosure - Financial Instruments and Hedging Activities (Additional Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivitiesAdditionalInformationDetails</Role>
      <ShortName>Financial Instruments and Hedging Activities (Additional Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/FinancialInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9955533 - Disclosure - Franchise Arrangements (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/FranchiseArrangementsDetail</Role>
      <ShortName>Franchise Arrangements (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/FranchiseArrangementsTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9955534 - Disclosure - Segment Information (Additional Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/SegmentInformationAdditionalInformationDetails</Role>
      <ShortName>Segment Information (Additional Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/SegmentInformationTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9955535 - Disclosure - Segment Information (Revenues and Operating Income by Segment) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/SegmentInformationRevenuesandOperatingIncomebySegmentDetails</Role>
      <ShortName>Segment Information (Revenues and Operating Income by Segment) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/SegmentInformationTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="mcd-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9955537 - Disclosure - Investments, Equity Method and Joint Ventures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.mcdonalds.com/role/InvestmentsEquityMethodandJointVenturesDetails</Role>
      <ShortName>Investments, Equity Method and Joint Ventures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.mcdonalds.com/role/InvestmentsEquityMethodandJointVentures</ParentRole>
      <Position>40</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="mcd-20260630.htm">mcd-20260630.htm</File>
    <File>mcd-20260630.xsd</File>
    <File>mcd-20260630_cal.xml</File>
    <File>mcd-20260630_def.xml</File>
    <File>mcd-20260630_lab.xml</File>
    <File>mcd-20260630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="852">http://fasb.org/us-gaap/2026</BaseTaxonomy>
    <BaseTaxonomy items="30">http://xbrl.sec.gov/dei/2026</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
