...+ U.S. telecommunications service provider Windstream Holdings Inc.'s EBITDA fell short of our expectations in 2014 and we expect the company's margins will continue to weaken over the next year. + We believe that operating lease adjusted leverage will be in the mid- to high-5x area in 2015, which is somewhat higher than our original expectations. + We are revising our rating outlook on Windstream to negative from stable and affirming our '##-' corporate credit rating on the company. + The 'B' issue-level rating on the company's senior unsecured debt remains on CreditWatch with positive implications. + The negative outlook reflects the risk of a downgrade if Windstream is unable to reduce leverage to below 5.5x over the next 12 months. NEW YORK (Standard & Poor's) March 12, 2015--Standard & Poor's Ratings Services today said it revised the outlook on Little Rock, Ark.-based Windstream Holdings Inc. to negative from stable and affirmed the '##-' corporate credit rating on the company. The...