Keith Urban was not in a fighting mood during his first performance since news of his split from Nicole Kidman broke. / I’ll hold you tighter / When they’re tryna get to you, baby, I’ll be the fighter.”Related: What Went Wrong Before Nicole Kidman and Keith Urban’s Shocking Split New details are being revealed in regard to what led to Nicole Kidman and Keith Urban’s split. Kidman filed for divorce one day later, citing irreconcilable differences, and listed their date of separation as the same day she filed. Related: Inside Nicole Kidman and Keith Urban‘s Divorce: Custody, Reason for Split Nicole Kidman and Keith Urban appear to be hammering out the details of their split following the Babygirl actress’ divorce filing. Kidman, 58, filed for divorce from Urban, 57, in Nashville on Tuesday, September 30, according to court documents obtained by Us Weekly.