How Tim Cook made Apple his own

The industrial engineer has turned Steve Jobs's creation into a corporate titan. Tim Cook became Apple's CEO in 2011, and while these past nine years haven't been marked by the waves of innovation that defined Jobs' time at the helm, Cook's success hasn't come short. Tripp Mickle tells the story in The Wall Street Journal of how the 'Zen master' delivered one of the most lucrative business successions in history.