diff --git a/.changelog/9085.txt b/.changelog/9085.txt
new file mode 100644
index 0000000000..8ec013c069
--- /dev/null
+++ b/.changelog/9085.txt
@@ -0,0 +1,3 @@
+```release-note:none
+
+```
diff --git a/website/docs/r/compute_region_instance_group_manager.html.markdown b/website/docs/r/compute_region_instance_group_manager.html.markdown
index 383c1c3f4a..b8f132f763 100644
--- a/website/docs/r/compute_region_instance_group_manager.html.markdown
+++ b/website/docs/r/compute_region_instance_group_manager.html.markdown
@@ -319,7 +319,7 @@ one of which has a `target_size.percent` of `60` will create 2 instances of that
 In addition to the arguments listed above, the following computed attributes are
 exported:
 
-* `id` - an identifier for the resource with format `{{disk.name}}`
+* `id` - an identifier for the resource with format `projects/{{project}}/regions/{{region}}/instanceGroupManagers/{{name}}`
 
 * `fingerprint` - The fingerprint of the instance group manager.