def METHOD_NAME(policy_name, account_id, aws_auth_cred):
    """
    Check wheter the given IAM policy already exists in the AWS Account
    Args:
        policy_name (str): Policy name
        aws_auth_cred (dict): AWS Auth details with region information
    Returns:
        Boolean: True if env exists else False
    """
    iam_client = get_iam_client(aws_auth_cred)
    policy_arn = "arn:aws:iam::%s:policy/%s" % (str(account_id), policy_name)
    try:
        policy = iam_client.get_policy(PolicyArn=policy_arn)
        return True if policy else False
    except:
        return False