. in the third quarter of 2006 , standard & poor 2019s reaffirmed the company 2019s long-term credit rating of bbb , revised its ratings outlook from neg- ative to stable , and upgraded its short-term credit rating from a-3 to a-2 . at december 31 , 2006 , the company also held long-term credit ratings of baa3 ( stable outlook ) and a short-term credit rating of p-3 from moody 2019s investor services