Earlier quoted context omitted.
>>I have a B.S. in Computer Science and B.S. in Mathematics (a double degree). Had I taken fewer courses, I could have had a combined B.S. Computer Science and Mathematics (a double major). What is the difference between having them separate as opposed to saying it was a double major? You still have to meet the same requirements don't you?
I believe double majors do not functionally require as much due to a greater chance of being able to double-count a class. Also, a double major typically means you get one diploma that lists your two majors. A double degree means that you get two physically separate diplomas. This may matter to someone. Of course, I may be compeletely wrong with respect to the OP's university.
The requirement for double majors is to complete both majors; only two courses are allowed to count twice, and only if the undergraduate chair of the department agrees.
Once you complete a double major, you can get a double degree (two diplomas) by reaching 150 credits instead of the 120 required for a single or double major.
Seems pretty fair since many colleges offer a one year Masters degree once you reach 150 credits (yes, I did take some graduate courses on my journey.)