The problem of global decentralized robust stabilization for a class of large-scale interconnected nonlinear systems with parameter uncertainties is investigated. Subsystems are assumed to be in a nested structure with multiple inputs. Interconnections are bounded by higher-order polynomials in the decentralized strict feedback form. Decentralized robust controllers are constructed by a Lyapunov-based recursive design technique, backstepping with the aid of augmentation, so that the corresponding closed-loop system is globally asymptotically stable for all possible uncertain parameters and interconnections,