The C.I.A. financial records program, which the officials said was authorized by provisions in the Patriot Act and overseen by the Foreign Intelligence Surveillance Court, offers evidence that the extent of government data collection programs is not fully known and that the national debate over privacy and security may be incomplete.

Some details of the C.I.A. program were not clear. But it was confirmed by several current and former officials, who spoke on the condition of anonymity because the matter is classified.

The data does not include purely domestic transfers or bank-to-bank transactions, several officials said. Another, while not acknowledging the program, suggested that the surveillance court had imposed rules withholding the identities of any Americans from the data the C.I.A. sees, requiring a tie to a terrorist organization before a search may be run, and mandating that the data be discarded after a certain number of years. The court has imposed several similar rules on the N.S.A. call logs program.