   <p:column headerText="Dis Amt" width="5em">
                                <h:outputText value="#{bi.discount}">
                                    <f:convertNumber pattern="#,##0.00"/>
                                </h:outputText>
                                <f:facet name="footer">
                                    <h:outputText value="#{reportController.discountTotal}">
                                        <f:convertNumber pattern="#,##0.00"/>
                                    </h:output