A spokesman said the break-up would not affect Abramovich's corporate interests, which include the top English football club, Chelsea.
No details of the financial settlement were disclosed.
Abramovich, who is also governor of Russia's fareastern Chukotka region, is ranked by "Forbes" magazine as the world's 16th-richest man, with an estimated personal wealth of $18.7 billion.
(Reuters, AFP, AP)
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