Not sure why you are being downvoted, but as someone who did try deleting an appleid, there is no self service way of doing so. Basically ended up removing all

Not sure why you are being downvoted, but as someone who did try deleting an appleid, there is no self service way of doing so. Basically ended up removing all possible data; and filling the rest with fake values. Finally I changed the password to some random string. Not sure how much aux/opaque data remains that I could not see (eg location services), but this was secondary throwaway account, so I didnt care much.