General Motors Corp. now is recycling 90 percent of its worldwide manufacturing waste and nets revenue of about $1 billion from byproduct recycling and reuse.

The Detroit-based GM said in a news release that it now has 102 landfill-free facilities, with a goal of 125 globally by 2020.

GM is offering to other companies a downloadable blueprint of its process for making facilities landfill-free to help them reduce their waste, the automaker said.

GM manages byproducts in one electronic tracking system to maximize their value.

 “A landfill-free program requires investment,” said Mike Robinson, GM vice president of sustainability and global regulatory affairs. “It’s important to be patient as those upfront costs decrease in time, and recycling revenues will help offset them. GM’s program allows the company to reduce its waste footprint while creating greater environmental awareness among employees and communities where it has facilities.