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  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2026"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
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  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <link:schemaRef
      xlink:href="https://xbrl.sec.gov/ffd/2026/ffd-2026.xsd"
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    <context id="rc">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001365135</identifier>
        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001365135</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
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        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <context id="offrl_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001365135</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>2</dei:lineNo>
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        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="Shares">
        <measure>shares</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-189">S-8</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-190">S-8</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-191">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-192">0001365135</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-193">Western Union CO</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="rc" id="hiddenrcOffsetTableNa">N/A</ffd:OffsetTableNa>
    <ffd:PrevslyPdFlg contextRef="offrl_1" id="ixv-196">false</ffd:PrevslyPdFlg>
    <ffd:PrevslyPdFlg contextRef="offrl_2" id="ixv-197">false</ffd:PrevslyPdFlg>
    <ffd:FormTp contextRef="rc" id="ixv-231">S-8</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-232">Western Union CO</dei:EntityRegistrantName>
    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-233">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_1" id="ixv-234">Common Stock, $0.01 par value per share</ffd:OfferingSctyTitl>
    <ffd:FeesOthrRuleFlg contextRef="offrl_1" id="ixv-235">true</ffd:FeesOthrRuleFlg>
    <ffd:AmtSctiesRegd
      contextRef="offrl_1"
      decimals="0"
      id="ixv-236"
      unitRef="Shares">1500000</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty
      contextRef="offrl_1"
      decimals="2"
      id="ixv-237"
      unitRef="USD">8.38</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="offrl_1"
      decimals="2"
      id="ixv-238"
      unitRef="USD">12570000.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="offrl_1"
      decimals="7"
      id="ixv-239"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="offrl_1"
      decimals="2"
      id="ixv-240"
      unitRef="USD">1735.92</ffd:FeeAmt>
    <ffd:OfferingSctyTp contextRef="offrl_2" id="ixv-241">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_2" id="ixv-242">Common Stock, $0.01 par value per share</ffd:OfferingSctyTitl>
    <ffd:FeesOthrRuleFlg contextRef="offrl_2" id="ixv-243">true</ffd:FeesOthrRuleFlg>
    <ffd:AmtSctiesRegd
      contextRef="offrl_2"
      decimals="0"
      id="ixv-244"
      unitRef="Shares">3000000</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty
      contextRef="offrl_2"
      decimals="2"
      id="ixv-245"
      unitRef="USD">8.38</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="offrl_2"
      decimals="2"
      id="ixv-246"
      unitRef="USD">25140000.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="offrl_2"
      decimals="7"
      id="ixv-247"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="offrl_2"
      decimals="2"
      id="ixv-248"
      unitRef="USD">3471.83</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="rc" decimals="2" id="ixv-249" unitRef="USD">37710000.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="rc" decimals="2" id="ixv-250" unitRef="USD">5207.75</ffd:TtlFeeAmt>
    <ffd:TtlOffsetAmt contextRef="rc" decimals="2" id="ixv-251" unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="rc" decimals="2" id="ixv-252" unitRef="USD">5207.75</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="offrl_1" id="ixv-253">(1) This Registration Statement on Form S-8 is filed by The Western Union Company, a Delaware Corporation (the "Registrant"), for the purpose of registering 1,500,000 shares of common stock, par value $0.01 per share (the "Common Stock"), of the Registrant that may be issued under The Western Union Company 2026 Inducement Plan. Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the ''Securities Act''), this Registration Statement shall also cover any additional shares of common stock that may become issuable as a result of stock splits, stock dividends, recapitalization or other similar transactions effected that results in an increase to the number of outstanding shares of Common Stock, as applicable. (2) Amount of Registration Fee estimated in accordance with Rules 457(c) and 457(h) under the Securities Act solely for the purpose of calculating the registration fee on the basis of $8.38 per share, the average of the high and low prices of the Common Stock on May 15, 2026 as reported on the New York Stock Exchange. </ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_2" id="ixv-254">(1) This Registration Statement on Form S-8 is filed by the Registrant, for the purpose of registering 3,000,000 shares of Common Stock, of the Registrant that may be issued under The Western Union Company 2026 Employee Stock Purchase Plan. Pursuant to Rule 416(a) under the Securities Act, this Registration Statement shall also cover any additional shares of common stock that may become issuable as a result of stock splits, stock dividends, recapitalization or other similar transactions effected that results in an increase to the number of outstanding shares of Common Stock, as applicable. (2) Amount of Registration Fee estimated in accordance with Rules 457(c) and 457(h) under the Securities Act solely for the purpose of calculating the registration fee on the basis of $8.38 per share, the average of the high and low prices of the Common Stock on May 15, 2026 as reported on the New York Stock Exchange. </ffd:OfferingNote>
</xbrl>
