Investor Warren Buffett renewed his Thanksgiving tradition of giving by announcing plans to hand more than $US1.1 billion ($1.7 billion) of Berkshire Hathaway stock to four of his family’s foundations, and he offered new details about who will be handing out the rest of his fortune after his death.

Buffett has said previously that his three kids will distribute his remaining $US147.4 billion ($226.8 billion) fortune in the 10 years after his death, but now he has also designated successors for them because it’s possible that Buffett’s children could die before giving it all away. He didn’t identify the successors, but said his kids all know them and agree they would be good choices.

“Father time always wins. But he can be fickle – indeed unfair and even cruel – sometimes ending life at birth or soon thereafter while, at other times, waiting a century or so before paying a visit,” the 94-year-old Buffett said in a letter to his fellow shareholders.

“To date, I’ve been very lucky, but, before long, he will get around to me. There is, however, a downside to my good fortune in avoiding his notice. The expected life span of my children has materially diminished since the 2006 pledge. They are now 71, 69 and 66.”

Buffett said he still has no interest in creating dynastic wealth in his family – a view shared by his first and current wives. He acknowledged giving Howard, Peter and Susie millions over the years, but he has long said he believes “hugely wealthy parents should leave their children enough so they can do anything but not enough that they can do nothing.”

The secret to building up such massive wealth over time has been the power of compounding interest and the steady growth of the Berkshire conglomerate Buffett leads through acquisitions and smart investments like buying billions of dollars of Apple shares as iPhone sales continued to drive growth in that company. Buffett never sold any of his Berkshire stock over the years and also resisted the trappings of wealth and never indulged in much – preferring instead to continue living in the same Omaha home he’d bought decades earlier and drive sensible luxury sedans about 20 blocks to work each day.

“As a family, we have had everything we needed or simply liked, but we have not sought enjoyment from the fact that others craved what we had,” he said.

If Buffett and his first wife had never given away any of their Berkshire shares, the family’s fortune would be worth nearly $US364 billion – easily making him the world’s richest man – but Buffett said he had no regrets about his giving over the years. The family’s giving began in earnest with the distribution of Susan Buffett’s $US3 billion estate after her death in 2004, but really took off when Warren Buffett announced plans in 2006 to make annual gifts to the foundations run by his kids along with the one he and his wife started, as well as the Bill & Melinda Gates Foundation.