Blade Not Passing Data To Controller Laravel - attributes

Question

This is my blade
<div class="modal fade" id="delete-document-modal-lg{{ $Document->id }}" >
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">Delete</h4>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<form method="POST" action="{{ route('document-tracking.destroy',[$Document->id] )}}" enctype="multipart/form-data">
{{ csrf_field() }}
#method('DELETE')
<div class="modal-body"> You sure you want to delete PDN: <b>{{ $Document->PDN }}<b>?</div>
<div class="modal-footer">
<button type="button" class="btn gray btn-default" data-dismiss="modal"> Cancel </button>
<button type="SUBMIT" class="btn gray btn-danger"> Delete</button>
</div>
</form>
</div>
this is my controller
public function destroy( Document $Document) {
$this->authorize('delete', $Document);
$Document->delete();
return redirect()->route('document-tracking.index')->with ('success', 'Document Deleted Successfully!');
}
This is my route
Route::resource('document-tracking', ('App\Http\Controllers\DocumentTracking\DocumentController'));
when I return $document with this code
return $document;
i got the [ ] result.
Can anyone help me solve this. Thanks in advance