On Sunday, The Washington Post published the first in a series of stories based on more than 11.9 million documents that expose a secretive financial universe that benefits the wealthy and powerful.

The vast trove of documents, known as the Pandora Papers, was obtained by the International Consortium of Investigative Journalists. The Washington Post collaborated on the investigation, which involved more than 600 journalists in 117 countries and territories, the largest ever organized by the ICIJ.

The investigation exposes the offshore system that government leaders, billionaires and criminals often use to hide their assets. For an explanation of how offshore systems work and why people choose to hold their money in these companies, read our overview.

Here’s what we know from our collective reporting: The files in the Pandora Papers detail more than 29,000 offshore accounts. Among them are more than 130 people listed as billionaires by Forbes magazine.

What questions do you have about the Pandora Papers? Debbie Cenziper, Greg Miller and Paul Sonne answered your questions on Monday. Here are some of the questions they answered:

Read the full transcript below.

Teddy Amenabar, an editor on The Post’s audience team, produced this Q&A.