The background on this is that in the past few years, the NCAA has allowed schools to exclude money that was transferred back to the main institution (from the athletic department) from showing as profits. By adding back in Excess Transfers Back we are finding the total amount of money generated by the different athletic deparments.

Definition: Positive net revenues generated by athletics and transferred to the institution for non-athletics purposes. These funds are in excess of the transfers subtracted from the institutional and governmental funds allocated to athletics.

(from http://cafidatabase.knightcommission.org/about-the-data)