A "rating" assigned by a rating agency (such as Moody's) represents an opinion on the creditworthiness of a company or a debt security.
Each rating agency uses its own methodology regarding the meaning of the ratings assigned.

Moody’s press release of 12th June 2020

Moody’s press release of 26th March 2020

Moody’s press release of 2nd October 2019

Long-term Issuer Rating Ba1 - Developing outlook
Long-term Bank Deposits Rating Baa3 - Positive outlook
Short-term Bank Deposits Rating P-3
Baseline Credit Assessment (BCA) Ba3

Date of last update: 12/06/2020