CountryDateAgencyRatingOutlook
United States4/22/2014DBRSAAAStable
United States3/21/2014FitchAAAStable
United States10/15/2013FitchAAANegative Watch
United States10/9/2013DBRSAAAUnder Review
United States7/18/2013Moody'sAaaStable
United States6/10/2013S&PAA+Stable
United States11/28/2011FitchAAANegative
United States9/8/2011DBRSAAAStable
United States8/5/2011S&PAA+Negative
United States8/2/2011Moody'sAaaNegative
United States7/14/2011S&PAAANegative Watch
United States7/13/2011Moody'sAaaNegative Watch
United States4/18/2011S&PAAANegative
United States9/21/2000FitchAAAStable
United States4/1/1996FitchAAAN/A
United States11/13/1995FitchAAANegative Watch
United States8/10/1994FitchAAAN/A
United States2/5/1949Moody'sAaaStable