Billionaires who won’t leave their fortunes to their Children

Using her newfound knowledge, Rinehart rebuilt her father's bankrupt business and turned it into one of Australia's most successful companies. After the death of her father in 1992, she took over the role of CEO of Hancock Prospecting Pty Limited (HPPL) and the HPPL group of companies. Nowadays, the mining magnate's personal wealth is estimated at $16.5 billion, but since her relationship with some of her family members is a bit rocky, Rinehart has chosen to donate a large chunk of her wealth to charitable causes. At one point, her feud with her son was so bad it had to be settled in court, and as part of the legal settlement, they agreed that half of her estate would be donated.