The 47-year-old actress says her spouse, whom she married in 2006, captured their six-year-old daughter's first cry as she entered the world on camera, reported Contactmusic.
"Giving birth is just whoa! What I remember the most is the cry. When the baby is born the cry penetrates on such a deep level and Keith says that too. He goes, 'What about that cry!'
"And we actually did record our birth. So we've heard it back. And every time it jolts me back into the moment," Kidman said.
"There's only a certain amount you can do once you have a children and a family. They say your art gets affected when you have a family, but I would much rather have a family," she added.