.4 million which included $ 31.4 million of amortization of deferred financing fees and a $ 6.3 million loss on extinguishment of debt . interest expense , net for the year ended december 31 , 2017 was $ 267.8 million which included $ 32.5 million of amortization of deferred financing fees and a $ 23.9 million loss on extinguishment of debt . interest expense , net for the year ended december 31 , 2016 was $ 276.9 million which included $ 34.7 million of amortization of deferred financing fees and a $ 27