Warren Buffett, the legendary investor behind Berkshire Hathaway confirmed that almost his entire fortune, over $145 billion, will go to charity, not heirs.

Warren Buffett has never been one to chase headlines. For most of his career, the 93-year-old billionaire investor has preferred to let his actions—and his annual shareholder letters —do the talking. But even Warren Buffett can’t give away $6 billion in a single day without people noticing.