CHICAGO--(BUSINESS WIRE)--Fitch Ratings has upgraded the Issuer Default Rating (IDR) assigned to Level 3 Communications, Inc. (LVLT) and its wholly owned subsidiary level 3 Financing, Inc. (Level 3 Financing) to 'BB-' from 'B+'. In addition, Fitch has upgraded specific issue ratings assigned to LVLT and affirmed issue ratings assigned to Level 3 Financing as outlined at the end of this release. LVLT had approximately $11 billion of consolidated debt outstanding on June 30, 2015. The rating acti


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