Speaking as a hiring manager, I will absolutely notice any delays or interruptions in your education (unless ancient); in the event you don't give the years, it often becomes obvious when you list high school degree or summer jobs.

The key is to have a reasonable story about the situation. Finishing a liberal arts degree in five years after you spent the first four partying doesn't send a good message. Finishing a degree after taking a break to handle <other important responsibility - family, startup, etc> or as a consequence of a major change that helps employer? Not a significant issue....