Jeff Bezos, founder and CEO of the technology company Amazon, announced on Wednesday that he and his wife, MacKenzie, are divorcing after a 25-year marriage – immediately fuelling speculation about the details of their divorce settlement.

Bezos, who has an estimated net worth of US$137 billion, is the richest person in the world and already some experts have mused whether his divorce could become the most expensive of all time.

Although no details of a Bezos settlement have been revealed, the technology mogul may end up on the long list of celebrities who have been on the wrong end of a costly divorce settlement, which includes Paul McCartney, Madonna, Tiger Woods – and even US President Donald Trump.

Each of those settlements was worth tens of millions of dollars, but they pale in comparison to the most expensive divorce settlements of all time.

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That dubious list is reserved for settlements worth hundreds of millions of dollars – and, in a few eye-popping cases, US$1 billion or more.

Check out the most expensive divorce settlements of all time:

10. Bob Johnson and Sheila Crump Johnson, 2002 – US$400 million

Television moguls Bob Johnson and Sheila Johnson were married from 1969 to 2002 and during their time together co-founded the television network Black Entertainment Television.

In 2000, the couple became the first African-American billionaires and when the couple divorced, two years later, Sheila Johnson walked away with US$400 million, according to ABC News.

In a twist of fate, Sheila later married the judge who presided over her divorce.

9. Mel Gibson and Robyn Moore, 2009 – US$425 million

The nearly half-a-million-dollar settlement between actor Mel Gibson and Robyn Moore, who were married in 1980 and had seven children together, remains the largest Hollywood divorce payout in history.

After separating in 2006, Moore filed for divorce in 2009 – with the divorce finalised only in 2011 – which saw Gibson pay a settlement of half of his net worth.

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8. Craig McCaw and Wendy McCaw, 1997 – US$460 million

American mobile phone industry pioneer Craig McCaw and newspaper publisher Wendy McCaw amicably divorced in 1997, with the settlement estimated to exceed US$460 million, according to Forbes magazine.

7. Dmitry Rybolovlev and Elena Rybolovleva, 2014 – US$604 million

Elena Rybolovleva filed for divorce from her Russian businessman husband, Dmitry Rybolovlev, citing his “serial infidelity”. She claimed that he used to “share his young conquests with his friends, and other oligarchs”.

The courts initially awarded Elena US$4.5 billion in the 2014 settlement, but after an appeal she walked away with “only” US$604 million.

6. Adnan Khashoggi and Soraya Khashoggi, 1980 – US$874 million

In 1961, Saudi Arabian arms dealer Adnan Khashoggi married a 20-year-old British woman named Sandra Daly, who converted to Islam and changed her name to Soraya.

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According to Time magazine, at the height of their wealth the couple owned 17 homes, three planes and three yachts.

They divorced in 1974 and their settlement totalled a then-record US$874 million – equivalent to more than US$2 billion today.

5. Harold Hamm and Sue Ann Arnall, 2012 – US$975 million

The bitter divorce proceedings between oil magnate Harold Hamm and his wife Sue Ann Arnall ended with Hamm writing her a huge US$974.8 million cheque.

Arnall did not immediately cash the cheque because of her multi-year court battle for a larger settlement, but ultimately she deposited it in 2015.

4. Steve and Elaine Wynn, 2010 – US$1 billion

Las Vegas casino and resort developer Steve Wynn was married to his former wife, Elaine, not once, but twice – from 1963 to 1986 and from 1991 to 2010.

Their second divorce is said to be one of the most expensive of all time. Although details have been kept a secret, the settlement is estimated to be as much as US$1 billion.

3. Bernie Ecclestone and Slavica Radic, 2009 – US$1.2 billion

Bernie Ecclestone, former chief executive of the Formula One Group, which manages F1 motorsport, who is one of the richest people in Britain, divorced Croatian model Slavica Radic in 2009.

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The settlement was estimated at US$1.2 billion and, although the details are not completely clear, there appears to be an unusual twist – Radic seems to be the one paying Ecclestone.

2. Rupert Murdoch and Anna Torv, 1999 – US$1.7 billion

Media mogul Rupert Murdoch and journalist Maria Torv were married for 31 years and had three children together.

But the couple had diverging plans about when Murdoch would retire and agreed to an “amicable separation” in 1998. Details of the separation are sparse, but Torv is rumoured to have received US$1.7 billion.

Both parties seemed to have moved on quickly: Murdoch married Wendi Deng 17 days after the divorce, while Torv married William Mann after six months.

1. Alec Wildenstein and Jocelyn Wildenstein, 1999 – $3.8 billion

The costliest known divorce occurred in 1999, when French-American businessman and art dealer Alec Wildenstein divorced his wife of 21 years, Jocelyn Wildenstein.

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The high-profile divorce proceedings resulted in Jocelyn being awarded US$2.5 billion – plus US$100 million for each of the next 13 years, according to People magazine, for a jaw-dropping total of US$3.8 billion. That is the equivalent of about US$5.7 billion today.

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This article originally appeared on  Business Insider .