The former couple - who have children Apple, 10, and Moses, nine, together - filed for divorce this week, over a year after they separated, but are doing everything they can to stay friends and keep their relationship amicable.
A source told the new issue of Grazia magazine: ''They will share joint custody as a children and agreed they will always spend Christmas, birthdays and significant holidays as a family.
''Chris has even given Gwyneth parting gifts, including handwritten lyrics of Coldplay songs that are about her.
''He knows they will be worth a lot of money in the future and he wants her and the children to have them.''
Things are so amicable between the 'Iron Man 3' star and the Coldplay frontman - who are now dating Brad Falchuk and Jennifer Lawrence respectively - they are even planning a divorce party for when the legal process is complete.
The source added: ''Gwyneth and Chris have been regularly speaking on the phone to ensure it all goes through with ease.
''They've even joked about having a divorce celebration with friends and family once it's complete.''
It was previously claimed Gwyneth, 42, and Chris, 38, will divide their £200 million fortune equally, and they are even planning to waive any child support arrangement.
A source said: ''They're worth pretty much the same amount so are planning to halve everything. They have too much dignity to row about who has what, who should have the most money and who should see most of the kids.''
It is believed that Gwyneth will remain in the family home in Brentwood, Los Angeles whilst Chris will move to Malibu so the pair are not too far apart.
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