Current Rating:
Standard & Poor's: AA, Stable; Moody's Investor Service: Aa1, Stable
Bond Rating Change History - Standard and Poor's
| Date | Action | Rating | Outlook |
|---|---|---|---|
| 05/31/2023 | Reaffirmed Rating | AA | Stable |
| 06/30/2022 | Reaffirmed Rating | AA | Stable |
| 6/01/2021 | Reaffirmed Rating | AA | Stable |
| 5/24/2012 |
Outlook Change
|
AA
|
Stable
|
| 3/10/2010 |
Outlook Change
|
AA
|
Negative
|
| 5/14/2007 |
Rating Upgrade
|
AA
|
Stable
|
| 5/31/2005 |
Rating Downgrade
|
AA-
|
Stable
|
| 5/27/2004 |
Rating Downgrade
|
AA
|
Stable
|
| 11/13/2002 |
Outlook Change
|
AA+
|
Negative
|
| 3/29/1994 |
Outlook Change
|
AA+
|
Stable
|
| 2/10/1992 |
Outlook Change
|
AA+
|
Negative
|
| 6/06/1991 |
Rating Downgrade
|
AA+
|
Stable
|
| 10/22/1978 |
Initial Rating
|
AAA
|
N/A
|
Bond Rating Change History - Moody's Investor Service
| Date | Action | Rating | Outlook |
|---|---|---|---|
| 5/15/2024 | Rating Upgrade | Aa1 | Stable |
| 05/31/2023 | Outlook Change | Aa2 | Positive |
| 06/30/2022 | Reaffirmed Rating | Aa2 | Stable |
| 5/26/2021 | Reaffirmed Rating | Aa2 | Stable |
| 6/4/2014 |
Outlook Change
|
Aa2
|
Stable
|
| 5/18/2012 |
Outlook Change
|
Aa2
|
Negative
|
| 4/19/2010 |
Recalibration
|
Aa2
|
Stable
|
| 5/24/2005 |
Rating Downgrade
|
Aa3
|
Stable
|
| 6/04/1998 |
Rating Upgrade
|
Aa2
|
N/A
|
| 5/12/1997 |
Rating Downgrade
|
Aa3
|
N/A
|
| 8/24/1993 |
Rating Upgrade
|
Aa
|
N/A
|
| 2/26/1982 |
Rating Downgrade
|
Aa1
|
N/A
|
| 4/19/1974 |
Rating Downgrade
|
Aa
|
N/A
|
| 1970 |
N/A
|
Aaa
|
N/A
|