We examine idea championing as a key intermediary process of the idea journey linking idea generation and idea implementation in teams. Building upon multilevel framework of emergence we theorize about how compositional and compilational emergence of idea generation along with idea championing behaviors translate team members’ creative ideas into team-level innovative solutions. We adopt a two-study research design including a two-wave two-source field study (309 employees nested into 92 teams with direct supervisors) and an experimental study (423 students nested into 79 teams) to test our conceptual model. The results of field study show that team innovation process featuring strong compilational (selected actor-maximum) idea generating f...