The history proves that doing that in a "ruinless" way is next to impossible
It took two major wars to install the American dollar as the world reserve currency. The first war (1914-1918) heavily undermined the power of the British pound (factually dethroned it), but it was only after the second war (1939-1945) that the US dollar got actually established as the supreme global currency. So it may take another devastating war to dethrone the dollar now. It is highly unlikely that the greenback is going to lose its influence without the world going through some catastrophic experience again given the military, economic, and technological muscle of Uncle Sam