The 49-year-old actress believes her husband Keith Urban and their children Faith, six, and Sunday, eight, would be able to survive without her, reported The Guardian.
"Keith is the rock but I'm very much the glue. I mean, I hate to say it, but yeah, you're the heartbeat of the family. Keith says it. The girls say it. They just like when I'm at home. There's just that female energy in the house, which is powerful..., Kidman said.
The actress said she has decided to keep her children out of the spotlight because she likes the "privacy" that comes with her family.