Accordion.qml

import QtQuick 2.4

Column {
    width: parent.width
    height: parent.height

    property alias model: columnRepeater.model

    Repeater {
        id: columnRepeater
        delegate: accordion
    }

    Component {
        id: accordion
        Column {
            width: parent.width

            Item {
                id: infoRow

                width: parent.width
                height: childrenRect.height
                property bool expanded: false

                MouseArea {
                    anchors.fill: parent
                    onClicked: infoRow.expanded = !infoRow.expanded
                    enabled: modelData.children ? true : false
                }

                Image {
                    id: carot

                    anchors {
                        top: parent.top
                        left: parent.left
                        margins: 5
                    }

                    sourceSize.width: 16
                    sourceSize.height: 16
                    source: 'images/triangle.svg'
                    visible: modelData.children ? true : false
                    transform: Rotation {
                        origin.x: 5
                        origin.y: 10
                        angle: infoRow.expanded ? 90 : 0
                        Behavior on angle { NumberAnimation { duration: 150 } }
                    }
                }

                Text {
                    anchors {
                        left: carot.visible ? carot.right : parent.left
                        top: parent.top
                        margins: 5
                    }

                    font.pointSize: 12
                    visible: parent.visible

                    color: 'white'
                    text: modelData.label
                }

                Text {
                    font.pointSize: 12
                    visible: infoRow.visible

                    color: 'white'
                    text: modelData.value

                    anchors {
                        top: parent.top
                        right: parent.right
                        margins: 5
                    }
                }
            }

            ListView {
                id: subentryColumn
                x: 20
                width: parent.width - x
                height: childrenRect.height * opacity
                visible: opacity > 0
                opacity: infoRow.expanded ? 1 : 0
                delegate: accordion
                model: modelData.children ? modelData.children : []
                interactive: false
                Behavior on opacity { NumberAnimation { duration: 200 } }
            }
        }
    }
}

example.qml

import QtQuick 2.0
import QtQuick.Window 2.2

Window {
    width: 640
    height: 480

    title: 'Accordion'
    visible: true

    Accordion {
        anchors.fill: parent
        anchors.margins: 10

        model: [
            {
                'label': 'Cash',
                'value':'$4418.28',
                'children': [
                    {
                        'label': 'Float',
                        'value': '$338.72'
                    },
                    {
                        'label': 'Cash Sales',
                        'value': '$4059.56'
                    },
                    {
                        'label': 'In/Out',
                        'value': '-$50.00',
                        'children': [
                            {
                                'label': 'coffee/creamer',
                                'value': '-$40.00'
                            },
                            {
                                'label': 'staples & paper',
                                'value': '-$10.00'
                            }

                        ]
                    }

                ]
            },
            {
                'label': 'Card',
                'value': '$3314.14',
                'children': [
                    {
                        'label': 'Debit',
                        'value': '$1204.04'
                    },
                    {
                        'label': 'Credit',
                        'value': '$2110.10'
                    }
                ]
            }

        ]
    }
}

Superb job.