The House-Senate conference negotiators Wednesday hammered out a compromise version of separate bills passed by the House and Senate granting more power to the FBI in obtaining business records.

The measure gives the Federal Bureau of Investigation greater authority to demand records from businesses in terrorism cases without the approval of a judge or a grand jury. While banks, credit unions and other financial institutions are currently subject to such demands, the measure expands the list to include car dealers, pawnbrokers, travel agents, casinos and other businesses.

The expansion, included in the 2004 authorization bill for intelligence agencies, has already been approved by both the House and the Senate, and lawmakers from both chambers approved the provision as part of the larger bill in a private session late Wednesday, officials said. Law enforcement officials said the F.B.I. would gain greater speed and flexibility in tracing suspected terrorist money.

Senator Richard J. Durbin (D-IL) unsuccessfully tried to get the negotiators to pass a sunset provision to the new bill.