For Toyota, it took 15 years cumulatively to clear level-3 and 10 years after clearing level-2. Getting middle management engaged is usually a challenge. Toyota mandated that for the second round of review of selected ideas, it is not the idea author (typically a shop floor worker) but his manager present the case. A self-organized community of gold-silver-bronze medalists called “Good Idea Club” made a difference.
At Cognizant, creating a concept lab was a step in the direction. Specific focus areas were identified e.g. Text mining, Faceted browsing and Robotics and slowly expanded to include semantic web, big data analytics, autonomous computing, augmented reality etc.
Note that idea per person per year metric is expected to be at least 1 to clear this level. It took Toyota 19 years cumulatively to clear this and Cognizant may have cleared it the current financial year.