I've hitherto assumed it didn't because it wasn't, short of calling every single `*:Describe*` API anyway.
But the existence of aws-nuke makes me think (I haven't looked into what it's doing yet) there must be a better way of discovering used services/resources. Through billing perhaps?
We've built an (open source) asset inventory product just for that use case, to continuously discover all inventory, not just what's provisioned by Terraform (or Pulumi, etc.).
