ejemplo grilla con detalle

index.cshtml

@(Html.Kendo().Grid<Kendo.Mvc.Examples.Models.EmployeeViewModel>()
    .Name("grid")
    .Columns(columns =>
    {
        columns.Bound(e => e.FirstName).Width(120);
        columns.Bound(e => e.LastName).Width(120);
        columns.Bound(e => e.Country).Width(120);
        columns.Bound(e => e.City).Width(120);
        columns.Bound(e => e.Title);
    })
    .Sortable()
    .Pageable()
    .Scrollable()
    .ClientDetailTemplateId("template") //aqui se agrega la referencia al id de la plantilla del detalle 
    .HtmlAttributes(new { style = "height:430px;" })
    .DataSource(dataSource => dataSource
        .Ajax()
        .PageSize(5)
        .Read(read => read.Action("HierarchyBinding_Employees", "Grid"))
    )
    .Events(events => events.DataBound("dataBound"))
)

<script id="template" type="text/kendo-tmpl">
    @(Html.Kendo().TabStrip()
            .Name("tabStrip_#=EmployeeID#")
            .SelectedIndex(0)
            .Animation(animation => animation.Open(open => open.Fade(FadeDirection.In)))
            .Items(items =>
            {
                items.Add().Text("Orders").Content(@<text>
                    @(Html.Kendo().Grid<Kendo.Mvc.Examples.Models.OrderViewModel>()
                        .Name("grid_#=EmployeeID#")
                        .Columns(columns =>
                        {
                            columns.Bound(o => o.OrderID).Title("ID").Width(56);
                            columns.Bound(o => o.ShipCountry).Width(110);
                            columns.Bound(o => o.ShipAddress);
                            columns.Bound(o => o.ShipName).Width(190);
                        })
                        .DataSource(dataSource => dataSource
                            .Ajax()
                            .PageSize(5)
                            .Read(read => read.Action("HierarchyBinding_Orders", "Grid", new { employeeID = "#=EmployeeID#" }))
                        )
                        .Pageable()
                        .Sortable()
                        .ToClientTemplate())
                </text>                        
                );
                items.Add().Text("Contact Information").Content(
                    "<div class='employee-details'>" +
                        "<ul>" +
                            "<li><label>Country:</label>#= Country #</li>" +
                            "<li><label>City:</label>#= City #</li>" +
                            "<li><label>Address:</label>#= Address #</li>" +
                            "<li><label>Home Phone:</label>#= HomePhone #</li>" +
                        "</ul>" +
                    "</div>"
                );                
            })
            .ToClientTemplate())
</script>