5. Harold Hamm & Sue Ann Arnall: $974.8 Million
A billion-dollar for a divorce settlement might seem an unfathomable amount for all of us but Sue Ann received this money when she sued her Oklahoma oil tycoon ex-husband Harold Hamm. They were married for over 26 years before they filed for divorce in 2012. The actual amount was $974.8 million, which he deemed as negligible citing his $18 billion fortune. Sue realized it and took her case to the Oklahoma court demanding for more money but the court ruled in favor of the Oil tycoon.