A federal judge on Tuesday gave final approval to Transocean's $1 billion civil settlement related to BP Plc's massive Gulf of Mexico oil spill in 2010. U.S. District Judge Carl Barbier signed the agreement, according to the court document filed in federal court in New Orleans. Transocean, which employed nine of the 11 workers killed in the accident, reached a $1.4 billion agreement to settle criminal and civil charges with the U.S. government in January…Transocean must still seek a settlement with the plaintiffs committee representing more than 100,000 individuals and business owners claiming economic and medical damages, so the ultimate cost of Macondo to Transocean could end up being higher.