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          <IsNumeric>true</IsNumeric>
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          <RoundedNumericAmount>3.8</RoundedNumericAmount>
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      <OriginalInstanceReportColumns />
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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 146
 -Paragraph 20

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Emerging Issues Task Force (EITF)
 -Number 95-3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Staff Accounting Bulletin (SAB)
 -Number Topic 5
 -Section P
 -Subsection 3, 4

</ElementReferences>
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      <Label>Additional expenses expected to be incurred</Label>
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      <ElementName>wu_RestructuringAndRelatedCostRemainingExpensesExpectedToBeIncurred</ElementName>
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          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>true</IsNumeric>
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          <ShowCurrencySymbol>true</ShowCurrencySymbol>
          <IsNumeric>true</IsNumeric>
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          <DisplayZeroAsNone>false</DisplayZeroAsNone>
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          <RoundedNumericAmount>10.0</RoundedNumericAmount>
          <NonNumbericText />
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          <hasSegments>false</hasSegments>
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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 146
 -Paragraph 20

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Emerging Issues Task Force (EITF)
 -Number 95-3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Staff Accounting Bulletin (SAB)
 -Number Topic 5
 -Section P
 -Subsection 3, 4

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      <Note>Expenses include non-cash write-offs and accelerated depreciation of fixed assets and leasehold improvements. However, these amounts were recognized outside of the restructuring accrual.</Note>
    </Footnote>
    <Footnote>
      <NoteId>2</NoteId>
      <Note>Other expenses related to the relocation of various operations to new and existing Company facilities include expenses for hiring, training, relocation, travel and professional fees. All such expenses will be recorded when incurred.</Note>
    </Footnote>
  </Footnotes>
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  <HasScenarios>false</HasScenarios>
  <MonetaryRoundingLevel>HundredThousands</MonetaryRoundingLevel>
  <SharesRoundingLevel>UnKnown</SharesRoundingLevel>
  <PerShareRoundingLevel>UnKnown</PerShareRoundingLevel>
  <HasPureData>false</HasPureData>
  <SharesShouldBeRounded>true</SharesShouldBeRounded>
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