Moody's

Moody's Ratings revised the outlook to negative from stable but affirmed the A1 rating on the CTA's senior lien sales tax bonds.

Moody's upgraded Minneapolis to Aaa. The outlook is stable, reflecting an expectation that a strong financial profile will help absorb cost pressures.

Suffolk's improved finances won the county its third rating upgrade this year.

Northern Illinois University is going to market with $62 million of certificates of participation to finance energy-saving projects affecting 50 buildings.

The downgrade affects $2.1 billion in bond debt and extends to its utility debt.

Moody's also upgraded other Florida locality bonds recently as a result of a revised cities and counties rating methodology.

Florida's Aaa credit is a factor in all the upgrades, the rating agency said.

S&P Global Ratings placed more than 400 state and local government issuers under criteria observation as the agency adopts an updated rating methodology.

"That's great news, and it reflects the outstanding work and commitment of our city council and my administration to keep Tampa on rock-solid financial footing," said Tampa Mayor Jane Castor.

The agency cited a sustained commitment to healthy reserves and structural balance.