A corruption scandal surrounding Brazilian energy giant Petroleo Brasileiro SA has had repercussions throughout Brazil amid an economic slowdown. The full economic impact will depend on how damaging it is to contracts between Petrobras and other implicated firms and on how much the company will write down its assets. The scandal will also complicate, if not derail, the contentious reforms Brazilian President Dilma Rousseff planned to enact during her second term, and it will add to existing social and political pressures on the government. Petrobras is enormously significant to the Brazilian economy . It controls more than 90 percent of Brazil's oil production and the largest amount of natural gas, and it owns more than 90 percent the country's refineries.