february 2018 which had no remaining authority . at december 31 , 2018 , we had remaining authority to issue up to $ 6.0 billion of debt securities under our shelf registration . receivables securitization facility 2013 as of december 31 , 2018 , and 2017 , we recorded $ 400 million and $ 500 million , respectively , of borrowings under our receivables facility , as secured debt . ( see further discussion of our receivables securitization facility in note 11 ) . 16