name : describe-principal-id-format.rst **To describe the ID format for IAM users and roles with long ID format enabled** The following ``describe-principal-id-format`` example describes the ID format for the root user, all IAM roles, and all IAM users with long ID format enabled. :: aws ec2 describe-principal-id-format \ --resource instance Output:: { "Principals": [ { "Arn": "arn:aws:iam::123456789012:root", "Statuses": [ { "Deadline": "2016-12-15T00:00:00.000Z", "Resource": "reservation", "UseLongIds": true }, { "Deadline": "2016-12-15T00:00:00.000Z", "Resource": "instance", "UseLongIds": true }, { "Deadline": "2016-12-15T00:00:00.000Z", "Resource": "volume", "UseLongIds": true }, ] }, ... ] }