How to get formatted string of account id's and names from aws_organizations_organization


Using Terraform 0.11.

I’m trying to get a string of account id’s and names out of aws_organizations_organization.

The format I want is:
"accountid": "account name" - "accountid2":"account name2"

I thought this would be easy as

data "aws_organizations_organization" "org" {}

locals {
   accountid_name_map = "${formatlist("\"%s\" - \"%s\"",*.id,*.name)}"

yet this keeps returning me an error like
formatlist: formatlist requires at least one list argument

I’ve been ttrying all kinds of iterations, but sofar it’s stumping me. How do I get this to work?