An automatic transmission includes a first power path producing a first
ratio of a speed of the input and a speed of a first power path output; a
second power path producing a second ratio of a speed of the input and a
speed of the second power path output, the second ratio being is less
than the first ratio; a double planetary gear unit including first,
second, third and fourth members, the second member being secured to the
output; a first clutch being operable to connect the first member to the
input through the first power path; a second clutch being operable to
connect the fourth member to the input through the first power path; a
third clutch being operable to connect the third member carrier to the
input through the second power path; a fourth clutch being operable to
connect the fourth member to the input through the second power path; a
first brake being operable to hold the fourth member against rotation;
and a second brake being operable to hold the third member against
rotation.