Two foundations pledged Tuesday to contribute $20 million over five years to organizations in the transgender movement, an unparalleled philanthropic donation to improve quality of life for transgender people around the world.

The dispersement could be a transformational windfall for groups with causes recently enjoying increased visibility — and growing backlash — but have historically had meager financial resources.

Beginning in 2016, the money will be awarded mostly to U.S. groups that focus on transgender issues or are led by transgender individuals, rather than organizations that include transgender issues as part of a broader agenda. The project will expand internationally in following years, particularly in poorer and developing nations.

The Arcus Foundation, which gives to social justice and human rights causes, will contribute $15 million. The NoVo Foundation, which focuses on girls and women, will give $1 million. A coalition of other foundations will give the remaining $4 million.