Born in Vienna, Detter spent his youth with rigorous training at the cadet school in Prague.
In 1905, he studied at the Academy of Fine Arts in Munich as a pupil of Franz von Stuck. After spending time abroad, mainly as a portraitist in Germany, Czechoslovakia and Switzerland, he came to Gmunden in 1945. It was in the town of Trause that he finally found a large circle of friends and a suitable atmosphere for his artistic work.
This was followed by works and exhibitions in Linz, Vienna, Vaduz and numerous other places. In addition to portraits, the artist also devoted himself to genre painting, still lifes and scene paintings with religious content, among other things, in an attempt to translate traditional themes into the new age.