RIO DE JANEIRO — Brazilian Olympic officials unveiled a $14.4 billion plan today to host the 2016 Summer Games, building on past events the city has hosted.

Rio will use facilities from the 2007 Pan American Games, and plans to use new and renovated venues from hosting the 2014 World Cup.

"Rio is ready and the time has come," Brazilian Olympic committee president Carlos Nuzman said. "This city, with its natural beauty, is an unrivaled stage to hold the Olympics."

Rio is competing against Chicago, Tokyo and Madrid for the 2016 Summer Olympics. All the cities presented their plans to the International Olympic Committee this week.

Rio's bid is divided into a $2.8 billion budget for Olympic operating costs and $14.4 billion for non-Olympic organizing committee costs, such as venue construction and security.

Nuzman said 56 percent of the facilities needed for the 2016 Olympics are already constructed thanks to the Pan American Games and progress toward the 2014 World Cup. That differentiates Rio from the other bid cities in this time of economic crisis, he said.

Sergio Cabral, the governor of Rio de Janeiro state, said South America was long overdue to host the Olympics.

"I've no doubt the other three cities are prepared to host the Olympics," he said. "But Brazil, Rio de Janeiro and all our people are prepared, too. We're prepared for South America to host the Olympics for the first time."

The Olympic bid books provide detailed answers to a questionnaire from the IOC about all facets of the bids, including budgets, sports venues, government guarantees, hotel accommodation, security and transportation.

The IOC authorized the cities to release the bid documents on their Web sites Friday. The IOC will select the host city by secret ballot on Oct. 2 in Copenhagen.

In economic terms, Brazil has said it hasn't been hit as hard by the global economic crisis. President Luiz Inacio Lula da Silva said the planned big infrastructure projects will go ahead.

The IOC evaluation commission will visit Rio from April 29-May 2.