<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>156</ContextCount>
  <ElementCount>264</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>35</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>75000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>75010 - Statement - Condensed Consolidated Statements of Operations (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfOperationsUNAUDITED</Role>
      <ShortName>Condensed Consolidated Statements of Operations (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>75020 - Statement - Condensed Consolidated Statements of Comprehensive Income (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfComprehensiveIncomeUNAUDITED</Role>
      <ShortName>Condensed Consolidated Statements of Comprehensive Income (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>75030 - Statement - Condensed Consolidated Balance Sheets (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheetsUNAUDITED</Role>
      <ShortName>Condensed Consolidated Balance Sheets (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>75040 - Statement - Condensed Consolidated Balance Sheets (UNAUDITED) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheetsUNAUDITEDParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheets (UNAUDITED) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>75050 - Statement - Condensed Consolidated Statements of Cash Flows (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfCashFlowsUNAUDITED</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>75060 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfChangesInStockholdersEquityUNAUDITED</Role>
      <ShortName>Condensed Consolidated Statements of Changes in Stockholders' Equity (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995455 - Disclosure - Overview, Basis of Presentation and Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPolicies</Role>
      <ShortName>Overview, Basis of Presentation and Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995465 - Disclosure - Revenue</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureRevenue</Role>
      <ShortName>Revenue</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Goodwill</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureGoodwill1</Role>
      <ShortName>Goodwill</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureLeases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Restructuring, Impairment and Other Charges, net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRestructuringImpairmentAndOtherChargesNet1</Role>
      <ShortName>Restructuring, Impairment and Other Charges, net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Retirement Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureRetirementPlans</Role>
      <ShortName>Retirement Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995525 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureDebt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995535 - Disclosure - Earnings per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureEarningsPerShare</Role>
      <ShortName>Earnings per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995545 - Disclosure - Share-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSharebasedCompensation</Role>
      <ShortName>Share-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995555 - Disclosure - Capital Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureCapitalStock</Role>
      <ShortName>Capital Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995565 - Disclosure - Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureComprehensiveIncome</Role>
      <ShortName>Comprehensive Income</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995575 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureSegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995585 - Disclosure - Overview, Basis of Presentation and Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Overview, Basis of Presentation and Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995595 - Disclosure - Overview, Basis of Presentation and Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPoliciesTables</Role>
      <ShortName>Overview, Basis of Presentation and Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995605 - Disclosure - Revenue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureRevenueTables</Role>
      <ShortName>Revenue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureRevenue</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995615 - Disclosure - Goodwill (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureGoodwillTables</Role>
      <ShortName>Goodwill (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureGoodwill1</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995625 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureLeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureLeases</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995635 - Disclosure - Restructuring, Impairment and Other Charges, net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRestructuringImpairmentAndOtherChargesNetTables</Role>
      <ShortName>Restructuring, Impairment and Other Charges, net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRestructuringImpairmentAndOtherChargesNet1</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995645 - Disclosure - Retirement Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureRetirementPlansTables</Role>
      <ShortName>Retirement Plans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureRetirementPlans</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995655 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureDebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureDebt</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995665 - Disclosure - Earnings per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>Earnings per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureEarningsPerShare</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995675 - Disclosure - Share-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSharebasedCompensationTables</Role>
      <ShortName>Share-based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSharebasedCompensation</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995685 - Disclosure - Capital Stock (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureCapitalStockTables</Role>
      <ShortName>Capital Stock (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureCapitalStock</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995695 - Disclosure - Comprehensive Income (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureComprehensiveIncomeTables</Role>
      <ShortName>Comprehensive Income (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureComprehensiveIncome</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995705 - Disclosure - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureSegmentInformationTables</Role>
      <ShortName>Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureSegmentInformation</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995715 - Disclosure - Overview, Basis of Presentation and Significant Accounting Policies - Summary of Current Expected Credit Loss Reserve (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPoliciesSummaryOfCurrentExpectedCreditLossReserveDetails</Role>
      <ShortName>Overview, Basis of Presentation and Significant Accounting Policies - Summary of Current Expected Credit Loss Reserve (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995725 - Disclosure - Overview, Basis of Presentation and Significant Accounting Policies - Summary of Current Expected Credit Loss Reserve (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureOverviewBasisOfPresentationAndSignificantAccountingPoliciesSummaryOfCurrentExpectedCreditLossReserveDetails1</Role>
      <ShortName>Overview, Basis of Presentation and Significant Accounting Policies - Summary of Current Expected Credit Loss Reserve (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995735 - Disclosure - Overview, Basis of Presentation and Significant Accounting Policies - Components of Company's Property, Plant and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPoliciesComponentsOfCompanySPropertyPlantAndEquipmentDetails</Role>
      <ShortName>Overview, Basis of Presentation and Significant Accounting Policies - Components of Company's Property, Plant and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995745 - Disclosure - Overview, Basis of Presentation and Significant Accounting Policies - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureOverviewBasisOfPresentationAndSignificantAccountingPoliciesAdditionalInformationDetails</Role>
      <ShortName>Overview, Basis of Presentation and Significant Accounting Policies - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995755 - Disclosure - Revenue - Schedule of Disaggregation of Revenue between Software Solutions, Tech-Enabled Services and Print and Distribution by Reportable Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRevenueScheduleOfDisaggregationOfRevenueBetweenSoftwareSolutionsTechenabledServicesAndPrintAndDistributionByReportableSegmentDeta</Role>
      <ShortName>Revenue - Schedule of Disaggregation of Revenue between Software Solutions, Tech-Enabled Services and Print and Distribution by Reportable Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995765 - Disclosure - Revenue - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRevenueAdditionalInformationDetails2</Role>
      <ShortName>Revenue - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995775 - Disclosure - Revenue (Additional Information 1) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRevenueAdditionalInformation1Details</Role>
      <ShortName>Revenue (Additional Information 1) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureRevenueTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995785 - Disclosure - Goodwill - Balances of Goodwill by Reporting Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureGoodwillBalancesOfGoodwillByReportingSegmentDetails</Role>
      <ShortName>Goodwill - Balances of Goodwill by Reporting Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995795 - Disclosure - Leases - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureLeasesAdditionalInformationDetails</Role>
      <ShortName>Leases - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995805 - Disclosure - Leases - Summary of Components of Lease Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureLeasesSummaryOfComponentsOfLeaseExpenseDetails</Role>
      <ShortName>Leases - Summary of Components of Lease Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995815 - Disclosure - Restructuring, Impairment and Other Charges, net - Schedule of Restructuring, Impairment and Other Charges by Segment Recognized in Results of Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRestructuringImpairmentAndOtherChargesNetScheduleOfRestructuringImpairmentAndOtherChargesBySegmentRecognizedInResultsOfOperation</Role>
      <ShortName>Restructuring, Impairment and Other Charges, net - Schedule of Restructuring, Impairment and Other Charges by Segment Recognized in Results of Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995825 - Disclosure - Restructuring, Impairment and Other Charges, net - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRestructuringImpairmentAndOtherChargesNetAdditionalInformationDetails</Role>
      <ShortName>Restructuring, Impairment and Other Charges, net - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995835 - Disclosure - Restructuring, Impairment and Other Charges, net - Schedule of Changes in the Employee Terminations Liability (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRestructuringImpairmentAndOtherChargesNetScheduleOfChangesInTheEmployeeTerminationsLiabilityDetails</Role>
      <ShortName>Restructuring, Impairment and Other Charges, net - Schedule of Changes in the Employee Terminations Liability (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995845 - Disclosure - Retirement Plans - Components of Net Pension Plan Expense (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureRetirementPlansComponentsOfNetPensionPlanExpenseDetail</Role>
      <ShortName>Retirement Plans - Components of Net Pension Plan Expense (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995855 - Disclosure - Debt - Schedule of the Company's Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureDebtScheduleOfTheCompanysDebtDetails</Role>
      <ShortName>Debt - Schedule of the Company's Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995875 - Disclosure - Debt - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureDebtAdditionalInformationDetails</Role>
      <ShortName>Debt - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995885 - Disclosure - Debt - Summary of Interest Expense, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureDebtSummaryOfInterestExpenseNetDetails</Role>
      <ShortName>Debt - Summary of Interest Expense, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995905 - Disclosure - Earnings per Share - Reconciliation of Numerator and Denominator Used in the Calculation of Net Earnings Per Basic and Diluted Share and the Anti-Dilutive Share-Based Awards (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureEarningsPerShareReconciliationOfNumeratorAndDenominatorUsedInTheCalculationOfNetEarningsPerBasicAndDilutedShareAndTheAntidilu</Role>
      <ShortName>Earnings per Share - Reconciliation of Numerator and Denominator Used in the Calculation of Net Earnings Per Basic and Diluted Share and the Anti-Dilutive Share-Based Awards (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995925 - Disclosure - Share-based Compensation - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSharebasedCompensationAdditionalInformationDetails</Role>
      <ShortName>Share-based Compensation - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995935 - Disclosure - Share-based Compensation - Summary of Nonvested Performance Share Units (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSharebasedCompensationSummaryOfNonvestedPerformanceShareUnitsDetails</Role>
      <ShortName>Share-based Compensation - Summary of Nonvested Performance Share Units (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995945 - Disclosure - Share-based Compensation - Summary of Nonvested Restricted Stock Unit Awards (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSharebasedCompensationSummaryOfNonvestedRestrictedStockUnitAwardsDetails</Role>
      <ShortName>Share-based Compensation - Summary of Nonvested Restricted Stock Unit Awards (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995955 - Disclosure - Capital Stock - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureCapitalStockAdditionalInformationDetails</Role>
      <ShortName>Capital Stock - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995965 - Disclosure - Capital Stock - Summary of Stock Repurchases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureCapitalStockSummaryOfStockRepurchasesDetails</Role>
      <ShortName>Capital Stock - Summary of Stock Repurchases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995975 - Disclosure - Comprehensive Income - Schedule of Components of Other Comprehensive (Loss) Income and Income Tax Expense Allocated to Each Component (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureComprehensiveIncomeScheduleOfComponentsOfOtherComprehensiveLossIncomeAndIncomeTaxExpenseAllocatedToEachComponentDetails</Role>
      <ShortName>Comprehensive Income - Schedule of Components of Other Comprehensive (Loss) Income and Income Tax Expense Allocated to Each Component (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995985 - Disclosure - Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Loss (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureComprehensiveIncomeScheduleOfChangesInAccumulatedOtherComprehensiveLossDetails</Role>
      <ShortName>Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Loss (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>996005 - Disclosure - Segment Information - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/Role_DisclosureSegmentInformationAdditionalInformationDetails</Role>
      <ShortName>Segment Information - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>996015 - Disclosure - Segment Information - Summary of Significant Segment Expenses and Other Segment Items (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSegmentInformationSummaryOfSignificantSegmentExpensesAndOtherSegmentItemsDetails</Role>
      <ShortName>Segment Information - Summary of Significant Segment Expenses and Other Segment Items (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>996025 - Disclosure - Segment Information - Summary of Significant Segment Expenses and Other Segment Items (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSegmentInformationSummaryOfSignificantSegmentExpensesAndOtherSegmentItemsParentheticalDetails</Role>
      <ShortName>Segment Information - Summary of Significant Segment Expenses and Other Segment Items (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="dfin-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>996035 - Disclosure - Segment Information - Schedule of Depreciation and Amortization, Assets and Capital Expenditures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dfinsolutions.com/20260331/taxonomy/role/DisclosureSegmentInformationScheduleOfDepreciationAndAmortizationAssetsAndCapitalExpendituresDetails</Role>
      <ShortName>Segment Information - Schedule of Depreciation and Amortization, Assets and Capital Expenditures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</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="dfin-20260331.htm">dfin-20260331.htm</File>
    <File>dfin-20260331.xsd</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="8">http://fasb.org/srt/2025</BaseTaxonomy>
    <BaseTaxonomy items="713">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
