When a third sun gear 23s and a fourth sun gear 24s are non-rotatably held stationary by a brake B2, a compound planetary gear train 25 of an automatic transmission 20 increases the speed of the power transmitted to a third carrier 23c, and transmits the resultant power to a third ring gear 23r and a fourth carrier 24c serving as a first output element and to a fourth ring gear 24r serving as a second output element. A clutch C3 for selectively connecting the fourth ring gear 24r of the compound planetary gear train 25 to first and second sun gears 21s and 22s of first and second planetary gears 21 and 22 and a clutch C4 for selectively connecting the third ring gear 23r and the fourth carrier 24c of the compound planetary gear train 25 to the first and the second sun gears 21s and 22s are disposed on a side closer in the axial direction to the compound planetary gear train 25 than the first and the second planetary gears 21 and 22.
