diff --git a/types/mongoose/index.d.ts b/types/mongoose/index.d.ts
index 7eb768f3c8..2e8b7c541c 100644
--- a/types/mongoose/index.d.ts
+++ b/types/mongoose/index.d.ts
@@ -1154,8 +1154,13 @@ declare module "mongoose" {
   }
 
   interface MongooseDocumentOptionals {
-    /** The string version of this documents _id. */
-    id?: string;
+    /**
+     * Virtual getter that by default returns the document's _id field cast to a string,
+     * or in the case of ObjectIds, its hexString. This id getter may be disabled by
+     * passing the option { id: false } at schema construction time. If disabled, id
+     * behaves like any other field on a document and can be assigned any value.
+     */
+    id?: any;
   }
 
   interface DocumentToObjectOptions {
diff --git a/types/mongoose/mongoose-tests.ts b/types/mongoose/mongoose-tests.ts
index 9fe20cd8ad..57c98fcbbf 100644
--- a/types/mongoose/mongoose-tests.ts
+++ b/types/mongoose/mongoose-tests.ts
@@ -503,6 +503,25 @@ doc.populate(cb);
 doc.populate({path: 'hello'}).execPopulate().catch(cb);
 doc.update({$inc: {wheels:1}}, { w: 1 }, cb);
 
+const ImageSchema = new mongoose.Schema({
+  name: {type: String, required: true},
+  id: {type: Number, unique: true, required: true, index: true},
+}, { id: false });
+
+interface ImageDoc extends mongoose.Document {
+  name: string,
+  id: number
+}
+
+const ImageModel = mongoose.model<ImageDoc>('image', ImageSchema);
+
+ImageModel.findOne({}, function(err, doc) {
+  if (doc) {
+    doc.name;
+    doc.id;
+  }
+});
+
 /*
  * section types/subdocument.js
  * http://mongoosejs.com/docs/api.html#types-subdocument-js
@@ -1277,6 +1296,7 @@ mongoModel.remove(function (err, product) {
   if (err) throw(err);
   MongoModel.findById(product._id, function (err, product) {
     if (product) {
+      product.id.toLowerCase();
       product.remove();
     }
   });