text: Credit ratings are not recommendations for investors to purchase, hold 
  or sell the rated securities, nor are they a comment on market price or 
  investor suitability. There is no assurance that a rating will remain in 
  effect for a given period of time, or that a rating will not be revised or 
  withdrawn entirely by a rating agency if it believes circumstances 
  warrant it. The ratings on our senior debt provided by Standard & 
  Poor’s, Fitch and Moody’s are investment grade ratings. 