Use DetachPolicy com um AWS SDK ou CLI

    using System;
    using System.Threading.Tasks;
    using Amazon.Organizations;
    using Amazon.Organizations.Model;

    /// <summary>
    /// Shows how to detach a policy from an AWS Organizations organization,
    /// organizational unit, or account.
    /// </summary>
    public class DetachPolicy
    {
        /// <summary>
        /// Initializes the Organizations client object and uses it to call
        /// DetachPolicyAsync to detach the policy.
        /// </summary>
        public static async Task Main()
        {
            // Create the client object using the default account.
            IAmazonOrganizations client = new AmazonOrganizationsClient();

            var policyId = "p-00000000";
            var targetId = "r-0000";

            var request = new DetachPolicyRequest
            {
                PolicyId = policyId,
                TargetId = targetId,
            };

            var response = await client.DetachPolicyAsync(request);

            if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
            {
                Console.WriteLine($"Successfully detached policy with Policy Id: {policyId}.");
            }
            else
            {
                Console.WriteLine("Could not detach the policy.");
            }
        }
    }

Como separar uma política de uma raiz, UO ou conta

O seguinte exemplo mostra como separar uma política de uma UO:

aws organizations  detach-policy  --target-id ou-examplerootid111-exampleouid111 --policy-id p-examplepolicyid111

def detach_policy(policy_id, target_id, orgs_client):
    """
    Detaches a policy from a target.

    :param policy_id: The ID of the policy to detach.
    :param target_id: The ID of the resource where the policy is currently attached.
    :param orgs_client: The Boto3 Organizations client.
    """
    try:
        orgs_client.detach_policy(PolicyId=policy_id, TargetId=target_id)
        logger.info("Detached policy %s from target %s.", policy_id, target_id)
    except ClientError:
        logger.exception(
            "Couldn't detach policy %s from target %s.", policy_id, target_id
        )
        raise