The money type represents an amount with attached currencyCode (as an attrilbute).
Example:
<amount currencyCode="EUR">10.20</amount>XML Schema:
<s:complexType name="money">
  <s:simpleContent>
    <s:extension base="s:decimal">
      <s:attribute name="currencyCode"
                   type="threeLetterCode"
                   use="required"/>
    </s:extension>
  </s:simpleContent>
</s:complexType>