Mackenzie Bezos now owns as her sole and separate property 25% of Amazon's stock worth in excess of $35 Billion. She is now the 3rd wealthiest woman in the world.
The divorce was filed on April 4th, 2019. Obviously, the couple had been negotiating the settlement prior to the filing. This is often the situation with high asset divorces, that the settlement is negotiated prior to the filing for divorce.
However, the same tact can be used with any divorce whether or not it is for billions or millions or less. But, it takes to rationale parties and opposing lawyers who are aiming to resolve the case efficiently.