Design of the ECCE detector for the Electron Ion Collider by Adkins, JK, Akiba, Y, Albataineh, A, Amaryan, M, Arsene, IC, Gayoso, CA, Bae, J, Bai, X, Baker, MD, Bashkanov, M, Bellwied, R, Benmokhtar, F, Berdnikov, V, Bernauer, JC, Bock, F, Boeglin, W, Borysova, M, Brash, E, Brindza, P, Briscoe, WJ, Brooks, M, Bueltmann, S, Bukhari, MHS, Bylinkin, A, Capobianco, R, Chang, W-C, Cheon, Y, Chen, K, Chen, K-F, Cheng, K-Y, Chiu, M, Chujo, T, Citron, Z, Cline, E, Cohen, E, Conroy, E, Cormier, T, Morales, YC, Cotton, C, Crafts, J, Crawford, C, Creekmore, S, Cuevas, C, Cunningham, J, David, G, Dean, CT, Demarteau, M, Diehl, S, Doshita, N, Dupré, R, Gwenlan, C