Kevin Costner and Christine Baumgartner settle divorce: report

• Kevin Costner and Christine Baumgartner have reportedly settled their divorce.
• Representatives for Costner and Baumgartner didn't immediately respond to Insider's requests for comment.

Kevin Costner and his wife of 18 years, Christine Baumgartner, have settled their divorce, according to a report from Entertainment Tonight.

The pair had been locked in an acrimonious battle over child support and custody of their three children, Cayden, Hayes, and Grace. Details about the agreement have not been made public.

Baumgartner initially requested that Costner pay her $248,000 a month in child support, but in September a judge ruled that Costner would have to pay Baumgartner $63,209 a month instead.

Insider has reached out to lawyers for both Baumgartner and Costner for comment.

The back-and-forth between the former couple has grown increasingly contentious in recent weeks. In early September, the "Yellowstone" star admitted that he "still has love" for Baumgartner even after she requested over $150,000 a month in child support, saying her children were used to a luxurious lifestyle.

Just a few weeks later, however, Costner's team slammed Baumgartner when she requested $885,000 from Costner to pay for the legal fees she incurred during the divorce proceedings. As Insider's Haven Orecchio-Egresitz reported on September 12, Costner's team called Baumgartner's request "nothing short of outrageous."

Baumgartner, for her part, said she owed over $300,000 to the lawyers representing her amid the divorce. Baumgartner's lawyers later accused her ex Costner of "outspending" her during the legal battle, and said that the payment would level the playing field.

Complicating matters even further was Costner's ongoing drama with "Yellowstone" creatives and Paramount executives, reportedly involving his desire to return to the hit show. While Costner's return may have been a possibility at one point, a remark he made during the divorce proceedings — that he might sue over his "Yellowstone" pay — seems to have soured relations between the actor, Paramount, and show creator Taylor Sheridan once again.

Baumgartner and Costner married in 2004. In May, Baumgartner filed for divorce from Costner, citing "irreconcilable differences."