Britney Spears (R) and Kevin Federline arrive for the Sony BMG Grammy Party in Los Angeles February 8, 2006. Photo Credit: REUTERS/Chris Pizzello21 March 2007 (Bang) - The singer has agreed to give her estranged husband $20 million in cash, plus half her earnings from their two year marriage.
In the out of court settlement, Kevin will also receive half of the money made from selling their Malibu marital home.
A source said: "Everything changed when Britney went into rehab. She and Kevin started talking again and he proved to be a tower of strength for her."
Britney and Kevin have also agreed to share custody of their two sons, 18-month-old Sean Preston and Jayden James, six months.
It has been reported the 25-year-old singer will eventually get primary custody, while Kevin, 29 will have visitation rights.
Britney's sister Jamie Lynn and her mother Lynne have been staying at Kevin's house helping to look after the children while Britney was in rehab.
The source added: "Her time in rehab showed Britney that Kevin loves his kids and is a good dad."
Britney and Kevin reportedly had an "amazing" meeting on Sunday (18.03.07), where they hammered out the terms of their divorce.
Britney was released from rehab yesterday ( 20.03.07).
The 'Toxic' singer has completed her almost one-month-long program at Malibu's Promises Center.
Her manager, Larry Rudolph, confirmed she left the center yesterday, saying "she has successfully completed her therapy".
Britney, 25, voluntarily checked herself into Promises on February 20 after a weekend of hard partying in Los Angeles during which she shocked the world by shaving her head.
She briefly left the program the next day but returned when estranged husband Kevin threatened a custody battle over their two sons.
The star has since attended Alcoholics Anonymous meetings. Her one-month stay in rehab is unusually short. A typical stay at Promises lasts around 45 days.