Kevin Costner Is ‘Relieved’ He and Estranged Wife Christine Settled Their Divorce (Exclusive)

PEOPLE confirmed the exes reached an agreement four and a half months after Christine Costner filed for divorce from the 'Yellowstone' star

<p>Lester Cohen/Getty </p>

Lester Cohen/Getty

Kevin Costner is "relieved" to put his contentious divorce behind him.

PEOPLE confirmed Tuesday that the 68-year-old Oscar winner and his estranged wife Christine, 49, had reached a settlement agreement four and a half months after she filed for dissolution of marriage May 1.

“Kevin is relieved that this matter has been settled and will continue to focus solely on jointly raising their three children,” a source tells PEOPLE.

The couple, who were married for 18 years, share sons Cayden, 16, and Hayes, 14, and daughter Grace, 13.

The terms of their settlement were not immediately clear, but TMZ, which first broke the news of the resolution, reported Christine would get more than the couple’s prenuptial agreement provided. According to previous court documents which referenced the prenup, the former model was entitled to around $1.5 million.

Related: A Complete Timeline of Kevin Costner and Christine Baumgartner's Divorce

<p>Bei/Shutterstock</p>

Bei/Shutterstock

That the Costners were able to come to an “amicable” resolution is somewhat of a surprise, considering the bitter battle they waged through their attorneys over the past several months.

In June, Kevin accused Christine of refusing to vacate the beachfront Santa Barbara compound — worth an estimated $145 million — where the two raised their children. He claimed she was in violation of their prenup, which outlined that she must move out of their house within 30 days if she filed for divorce.

Since then, they have battled over several issues, including the amount of child support Kevin should pay; Christine’s move out date; and what household items she was entitled to remove from the house when she vacated the premises.

She ultimately moved into a $40,000-per-month rental home in August not far from Kevin’s compound.

During a two-day Santa Barbara court case determining child support in late August and early September, a judge set the monthly payments Kevin would pay to Christine at $63,209, matching his proposed amount after she and her lawyers had requested $175,057, up from the $129,755 the actor had been previously ordered to tentatively pay.

Both Kevin and Christine took the stand to make their case, and following the hearing, the judge wrote in a court filing explaining that although he found Christine “credible,” he thought larger child support could be “disguised spousal support.”

Related: Kevin Costner and Ex Talk Next Steps amid Divorce: She'll 'Enter the Workforce,' He Wants 'Time for Myself'

<p>Paramount Network / Courtesy Everett Collection; Axelle/Bauer-Griffin/FilmMagic</p>

Paramount Network / Courtesy Everett Collection; Axelle/Bauer-Griffin/FilmMagic

Earlier Tuesday, a rep for Kevin confirmed the pair had reached an agreement in a joint statement by the divorcing couple.

“Kevin and Christine Costner have come to an amicable and mutually agreed upon resolution of all issues pertaining to their divorce proceedings,” a rep for said in a joint statement previously obtained by PEOPLE.

Ahead of the news of their settlement, the exes were set to appear in court again this November to hash out the validity of their premarital agreement.

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