Internal Credit Rating Obligation Type Aggregate Net Par  Outstanding as  of Impact of Aggregate Net Par  Outstanding  Credit December 31, 2012 FGIC Commutation after FGIC  Commutation (In millions) State of California. . . . . . . . . . . . . . . . . . . . BBB General Obligations $ 579.2 $ — $ 579.2 North Bay Plenary Health Canadian  Hospital (AGM Insured). . . . . . . . . . . . . . . AAA Healthcare 361.3 — 361.3 New Jersey, Transportation Trust Fund Authority. . . . . . . . . . . . . . . . . . . . . . . . . . . A General Obligations 339.7 — 339.7 State of New Jersey . . . . . . . . . . . . . . . . . . A General Obligations 291.6 — 291.6 New Jersey Economic Development Authority School FAC . . . . . . . . . . . . . . . . A General Obligations 267.6 — 267.6 Jefferson County Water and Sewer Authority. . . . . . . . . . . . . . . . . . . . . . . . . . . D Utilities 225.4 195.9 29.5 Commonwealth of Puerto Rico . . . . . . . . . BBB General Obligations 213.3 43.1 170.2 Reliance Rail Finance Pty LTD (1). . . . . . . BB Transportation 191.0 — 191.0 City of Detroit, Michigan. . . . . . . . . . . . . . BB General Obligations 183.8 175.0 8.8 Puerto Rico Highway and Transit Authority. . . . . . . . . . . . . . . . . . . . . . . . . . . BBB Tax-Backed 183.5 6.9 176.6 $ 2,836.4 $ 420.9 $ 2,415.5 (1)  All of our net par outstanding to this credit is second-to-pay obligations to Syncora ($120.5 million) and FGIC ($70.5  million). The following table represents our 10 lar gest structured finance single risks by net par outstanding (together representing  16.3% of financial guaranty’ s aggregate net par outstanding) as of  December 31, 2012. We have entered into each of these  transactions through the issuance of CDS: (1)  In addition, as of December 31, 2012, we have insured an additional five Static Synthetic Investment-Grade Corporate  CDOs, each with an aggregate net par outstanding of $450 million.  As of December 31, 2012, the internal credit rating for  each of these additional transactions is  AAA. 35 Internal Credit Rating Obligation Type Scheduled Maturity Date Aggregate Net Par Outstanding as of Credit December 31, 2012 (In millions) 10-Yr Static Synthetic Investment-Grade Corporate CDO. . . AAA Corporate CDO 2017 $ 600.0 10-Yr Static Synthetic Investment-Grade Corporate CDO. . . AAA Corporate CDO 2017 600.0 10-Yr Static Synthetic Investment-Grade Corporate CDO. . . AAA Corporate CDO 2017 600.0 10-Yr Static Synthetic Investment-Grade Corporate CDO. . . AAA Corporate CDO 2017 600.0 10-Yr Static Synthetic Investment-Grade Corporate CDO. . . AAA Corporate CDO 2017 600.0 Static Synthetic CDO of CMBS. . . . . . . . . . . . . . . . . . . . . . . AAA CDO of CMBS 2049 598.5 10-Yr Static Synthetic Investment-Grade Corporate CDO. . . AAA Corporate CDO 2017 562.5 Static Synthetic CDO of CMBS. . . . . . . . . . . . . . . . . . . . . . . AAA CDO of CMBS 2047 450.0 7-Yr Static Synthetic Investment-Grade Corporate CDO. . . . AA Corporate CDO 2013 450.0 7-Yr Static Synthetic Investment-Grade Corporate CDO. . . . AAA Corporate CDO 2013 450.0 (1) $ 5,511.0