Credit ratings & outlooks
As at March 31, 2013
Senior unsecured debt
| Rating | Long-term outlook | |
| DBRS | A (low) | Stable |
| S&P | BBB+ | Stable |
| Moody's | Baa2 | Stable |
Commercial paper
| Rating | Short-term outlook | |
| DBRS | R-1 (low) | Stable |
| S&P | A-1 (Low) | Stable |
| Moody's | P2 | Stable |
