The Australian actress married Cruise in 1990 after they starred together in the film Days Of Thunder.
She said: “I got married very young, but it definitely wasn’t power for me – it was protection.
Speaking about Hollywood’s harassment scandal, Kidman said: “Of course I’ve had MeToo moments – since I was little! But do I want to expose them in an article? No. Do they come out in my work? Absolutely.”
Kidman and Cruise, who during their marriage adopted two children, Isabella, now 25, and son Connor, now 23, divorced in 2001. She said her separation from Cruise forced her to “grow up”.
Kidman married country music singer Keith Urban in 2006. The couple have two daughters together: Sunday, 10, and Faith, seven.
The Oscar-winning star’s films include Moulin Rouge!, The Hours, Lion, The Others and Dead Calm.