derivative receivables reported on the consolidated balance sheets were $ 59.7 billion and $ 79.0 billion at december 31 , 2015 and 2014 , respectively . these amounts represent the fair value of the derivative contracts , after giving effect to legally enforceable master netting agreements and cash collateral held by the firm . however , in management 2019s view , the appropriate measure of current credit risk should also take into consideration additional liquid securities ( primarily u.s