Nicole Kidman files for divorce from Keith Urban citing 'marital difficulties'

Kidman, 58, cited "irreconcilable differences" as the grounds for divorce, noting "marital difficulties," after nearly 20 years of marriage.

The "Big Little Lies" actress listed Sept. 30 as the date of separation from Urban, and requested to be named the primary residential parent of their two minor children.

Kidman requested the court approve a parenting plan for their daughters, which allocated 306 days per year with her and 59 days each year with Urban.

"Father has prepaid all child support obligations owed to mother," documents stated. "The parties also made additional provisions to provide for all the needs of the children above and beyond what would be required under the Child Support Guidelines, and Father has prepaid other expenses for the children as cited in the Permanent Parenting Plan."

Additionally, "Each party further has significant separate assets and means to independently care for both minor children while in his or her care."

In Kidman's filing, the Oscar-winning actress asked to be granted an "absolute divorce" at the final hearing.

Representatives for Kidman and Urban did not immediately respond to Fox News Digital's request for comment.

"It's always family first," Urban said. "It's balanced, so it means it goes out of balance sometimes, and we just put it back in balance. It's never perfectly in balance, but we get it back on track."