Actress Nicole Kidman has filed for divorce from her husband, country musician Keith Urban, after nearly 20 years of marriage, according to court documents obtained Tuesday by CBS News.

The documents show that the 58-year-old Kidman filed for divorce Monday from the 57-year-old Urban in Davidson County Circuit Court in Nashville, Tennessee, where the couple resides.

She cited "irreconcilable differences" as the reason, per the court documents.

A separate marital dissolution agreement signed by both Kidman and Urban shows that the two reached a co-parenting arrangement that will see Kidman serve as the "primary residential parent" of their two teenage daughters, with Urban having visitation and other rights.

As part of their agreement, both are required to attend a parent education clas

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