Great leaders are able to extricate themselves from the minutia and see the big picture. This isn't big-picture only thinking. This is an important point to make note of. This does not mean to suggest a leader is a grand ideas, big thinker only. No, in fact it means quite the opposite. A great leader is able to synthesize their incredible world-changing ideas into meaningful steps and equate them with the minutely small day-to-day functions and tasks. In a sense they are able to hold this dichotomous view in their head where they see not just the daily grind but also the fully completed goal at the same time. There are other types of perspective a great leader maintains as well. Here's a quick three.
Great leaders see the large picture and the details simultaneously
Great leaders are able to relate to the perspective of the customer
Great leaders are able to communicate in the language of the employee