...NEW YORK (Standard & Poor's) Dec. 23, 2013--Standard & Poor's Ratings Services said it raised its long-term rating and underlying rating (SPUR) on Philadelphia's general obligation (GO) debt two notches to 'A+' from 'A-' based on its recently released local GO criteria. The outlook is stable. Standard & Poor's also raised to 'A+' from 'A-' its long-term rating and SPUR on Philadelphia Redevelopment Authority's, Philadelphia Authority for Industrial Development's, and Philadelphia Municipal Authority's GO-equivalent appropriation debt, supported by the city. A pledge of the city's full faith credit secures the GO bonds. "The stable outlook reflects our view of the city's strong budget performance due, in part, to oversight from PICA," said Standard & Poor's credit analyst Hilary Sutton. RELATED CRITERIA AND RESEARCH Related Criteria + USPF Criteria: Local Government GO Ratings Methodology And Assumptions, Sept. 12, 2013 + USPF Criteria: Appropriation-Backed Obligations, June 13, 2007 Related...