Beautiful Perennial

I have this beautiful, enormous perennial in my backyard that has so many daisy like blooms. I am going to definitely move it to a different location when it is done blooming so next year it won't be taking over. As you can see it is about 8 feet wide and as tall as the fence. I am not sure what is is called though. I am thinking it is in the mum family since it is now blooming. What do you think mom? Call me!