Elastic d 12 C scattering is considered on the basis of the sum of two mechanisms, single and double N 12 C scattering. The refined Glauber theory is used including full spin dependence of N 12 C-scattering amplitudes which are produced within the optical model of the elastic N 12 C scattering. Numerical results are obtained at the deuteron beam energy 270 MeV and compared with the data on unpolarized differential cross section, vector A y and tensor A yy analyzing powers.