Wrong id set when using h:selectOneRadio and f:selectItem - html

Question

This is my code:
<h:panelGroup id="deliveryAddress" columns="2">
<h:selectOneRadio id="deliveryAddressRadioGroup" value="#{mybean.deliveryAddress}" layout="pageDirection" onclick="resetTextField()">
<f:selectItem id="pickedUp" itemValue="wird abgeholt (WET B4)" itemLabel="#{msg.subscriptionFormFieldDeliveryAddressPickedUp}"/>
<f:selectItem id="send2OrderingPerson" itemValue="Versand an Bestellenden" itemLabel="#{msg.subscriptionFormFieldDeliveryAddressSend2OrderingPerson}"/>
<f:selectItem id="send2SubscrOwner" itemValue="Versand an Abonnementsbesitzer" itemLabel="#{msg.subscriptionFormFieldDeliveryAddressSend2SubscrOwner}"/>
<f:selectItem id="send2SupportGroup" itemValue="Versand an Support-Gruppe" itemLabel="#{msg.subscriptionFormFieldDeliveryAddressSend2SupportGroup}"/>
</h:selectOneRadio>
</h:panelGroup>
From that I expect that the ids of the single buttons are pickedUp, send2OrderingPerson, send2SubscrOwner and send2SupportGroup. (or at least detailForm:xxx).
Instead, if I look at the resulting code, I get:
<span id="detailForm:deliveryAddress">
<table id="detailForm:deliveryAddressRadioGroup">
<tbody>
<tr>
<td>
<input id="detailForm:deliveryAddressRadioGroup:0" type="radio" onclick="resetTextField()" value="wird abgeholt (WET B4)" name="detailForm:deliveryAddressRadioGroup">
<label for="detailForm:deliveryAddressRadioGroup:0"> will be piched up (WET B4)</label>
</td>
</tr>
<tr>
<td>
<input id="detailForm:deliveryAddressRadioGroup:1" type="radio" onclick="resetTextField()" value="Versand an Bestellenden" name="detailForm:deliveryAddressRadioGroup">
<label for="detailForm:deliveryAddressRadioGroup:1"> send to ordering person</label>
</td>
</tr>
<tr>
<td>
<input id="detailForm:deliveryAddressRadioGroup:2" type="radio" onclick="resetTextField()" value="Versand an Abonnementsbesitzer" name="detailForm:deliveryAddressRadioGroup" checked="checked">
<label for="detailForm:deliveryAddressRadioGroup:2"> send to subscription's owner</label>
</td>
</tr>
<tr>
<td>
<input id="detailForm:deliveryAddressRadioGroup:3" type="radio" onclick="resetTextField()" value="Versand an Support-Gruppe" name="detailForm:deliveryAddressRadioGroup">
<label for="detailForm:deliveryAddressRadioGroup:3"> send to support group</label>
</td>
</tr>
</tbody>
</table>
</span>
What's wrong?