As I understand it unfunded liablities in Detroit's case primarily refers to pension benefits of retired and future civil govt. employees in the Motor City. . By definition an unfunded lliabilty has no asset of equal or greater value to back it. From what I am reading population of Detroit around 701000. Unfunded liablities owed to cops, firemen, bureaucrats..........$ 3,500,000,000 (most conservative estimate I found was this 3.5 billion.). If my math is correct that is a shade under $5000 per Detroit resident owed just for this.