Financial leaders of the world's 20 biggest economies will consider next week in Washington a proposal to cut their public debt over the longer term to well below 90 percent of gross domestic product, a document prepared for the meeting showed.

The proposal, prepared by the co-chairs of the G20 Working Group on the Framework for Growth, follows agreement of the leaders of G20 countries in June last year to set ambitious debt reduction targets beyond 2016, when, under an earlier agreement from Toronto in 2010, debt was to stop growing.