Over the last 16 years, Musk's business deals with the government total nearly $20 billion, according to federal contracting data.

Elon Musk has grown about $105 billion richer this year, boosting his net worth to a near-record $335 billion at Monday's market close.

President-elect Donald Trump has tasked Elon Musk and Vivek Ramaswamy with leading a panel to streamline the U.S. government, called the Department of Government Efficiency. Details are to follow, but here's what we know about the genesis of the DOGE.