The 58-year-old actor married the country singer in Sydney in 2006, a year after they first met, and they went on to have daughters Sunday, 17, and 15-year-old Faith.
After filing for divorce in September, Kidman has now spoken out about the situation, admitting that although she wants to keep things private out of respect for her estranged husband, her girls will always be her priority.
Asked if she is OK after splitting from Keith, she told Variety, "I am".
"I'm always going to be moving toward what's good. What I'm grateful for is my family and keeping them as is and moving forward," Kidman said.
"That's that. Everything else I don't discuss out of respect.
"I'm staying in a place of, 'We are a family', and that's what we'll continue to be. My beautiful girls, my darlings, who are suddenly women."
Meanwhile, the Scarpetta actor lost her mum Janelle Kidman in September 2024 and is convinced that whenever she sees a lady beetle, her mother is paying her a visit.
"Ladybugs ... I said that to my daughter the other day. We saw one and I said, 'Grandmama's here!'
"My daughter looked at me like I was crazy and said, 'No, Mum. That's a ladybug.'
"I said, 'Absolutely not. It's your grandmother.' Whether it's true or not, it's soothing. I'll accept that."
Kidman - who also has adult children Isabella and Connor with ex-husband Tom Cruise - recently admitted she knows she can overcome "devastating" and "painful" events in life because of her past experiences.
"The best part (of getting older) is the experiences that you've accumulated. So you go, 'Oh, I've been here before. I actually know how to handle this now'," she told Harper's Bazaar magazine.
"Or: 'Maybe I haven't been in this place, but I've experienced something similar to this, and I do know that I will get through it.'
"There's something to knowing that no matter how painful, or how difficult, or how devastating something is, there is a way through.
"You're going to have to feel it. You're not going to be able to numb it. You are going to have to feel it, and it's going to feel insurmountable at times.
"You're going to feel like you're broken, but if you move gently and slowly - and it can take an enormous amount of time - it does pass."
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