A bill to authorize an additional permanent judgeship in the District of Idaho, and for other purposes.

Directs the President to appoint additional Federal district court judges for Alabama (two), Arizona (three), California (seven), Florida (six), Idaho (one), Missouri (one), Nebraska (one), New Mexico (two), New York (three), Oregon (one), South Carolina (one), Virginia (two), Utah (one), and Washington (one). Specifies the timing of such appointments.

Converts temporary judgeships to permanent judgeships for the eastern district of California, the district of Hawaii, the district of Kansas, and the eastern district of Missouri.

Requires the President to appoint temporary district judges for California (six), Colorado (one), Florida (one), Illinois (one), Indiana (two), Iowa (one), New Mexico (one), and New York (two). Specifies the timing of such appointments.

Directs the President to appoint additional Federal circuit court judges for the First Circuit (one), Second Circuit (two), Sixth Circuit (one), and Ninth Circuit (five).

Requires the President to appoint two temporary circuit court judges for the Ninth Circuit.

Ninth Circuit Judgeship and Reorganization Act of 2004 - Amends the Federal judicial code to divide the Ninth Judicial Circuit into the Ninth Circuit (to be composed of California, Guam, Hawaii, and the Northern Mariana Islands), the Twelfth Circuit (to be composed of Arizona, Nevada, Idaho, and Montana), and Thirteenth Circuit (to be composed of Alaska, Oregon, and Washington State).

Requires the President to appoint, with the advise and consent of the Senate, five additional circuit judges for the new Ninth Circuit (not before January 21, 2005) and two temporary judges for the former Ninth Circuit.

Specifies the locations where the new circuits are to hold regular sessions.

Assigns active circuit judges of the former Ninth Circuit to the new circuits based on their current duty station. Allows senior circuit judges of the former Ninth Circuit to elect assignment to any of the three new circuits.

Specifies the disposition of cases pending in the former Ninth Circuit before the effective date of this Act as follows: (1) proceedings in matters that have been submitted for decision shall continue without regard to this Act; (2) matters not yet submitted for decision must be transferred to the court to which they would have been submitted under this Act; and (3) proceedings on petitions for rehearing or rehearing en banc that have been submitted or decided shall continue without regard to this Act.

Authorizes the temporary assignment of the circuit and district judges of the former Ninth Circuit among the new circuits. Authorizes administrative coordination among any two contiguous circuits among the new circuits.

Directs that the former Ninth Circuit shall cease to exist for administrative purposes two years after enactment of this Act.