A motive power transmission device, comprising: a first rotating electric machine axially extending from a first end surface to a second end surface; a first case housing said first rotating electric machine; a first bolt fixing said first rotating electric machine to said first case; a second rotating electric machine axially extending from a third end surface to a fourth end surface; a second case housing said second rotating electric machine; a second bolt fixing said second rotating electric machine to said second case; and a motive power split mechanism connected to said first rotating electric machine and said second rotating electric machine; a surface of said first case on a side having said first end surface being bonded to a surface of said second case on a side having said third end surface; characterized in that the first bolt fixes said first rotating electric machine to said first case on a side having said second end surface; the second bolt fixes said second rotating electric machine to said second case on a side having said fourth end surface; the motive power transmission device further comprises a first pedestal interposed between said first rotating electric machine and said first case, and a second pedestal interposed between said second rotating electric machine and said second case; said first bolt is screwed into said first case from the side having said second end surface to fix said first pedestal to said first case; said second bolt is screwed into said second case from the side having said fourth end surface to fix said second pedestal to said second case; and the first and second cases (160, 260) each include a large-diameter portion with a relatively large inner diameter and a small-diameter portion with a relatively small inner diameter, and flange portions (141, 241) of first and second pedestals (140, 240) are each located in the large-diameter portion, and portions other than flange portions (141, 241) are each located in the small-diameter portion. a first rotating electric machine axially extending from a first end surface to a second end surface; a first case housing said first rotating electric machine; a first bolt fixing said first rotating electric machine to said first case; a second rotating electric machine axially extending from a third end surface to a fourth end surface; a second case housing said second rotating electric machine; a second bolt fixing said second rotating electric machine to said second case; and a motive power split mechanism connected to said first rotating electric machine and said second rotating electric machine; a surface of said first case on a side having said first end surface being bonded to a surface of said second case on a side having said third end surface; characterized in that the first bolt fixes said first rotating electric machine to said first case on a side having said second end surface; the second bolt fixes said second rotating electric machine to said second case on a side having said fourth end surface; the motive power transmission device further comprises a first pedestal interposed between said first rotating electric machine and said first case, and a second pedestal interposed between said second rotating electric machine and said second case; said first bolt is screwed into said first case from the side having said second end surface to fix said first pedestal to said first case; said second bolt is screwed into said second case from the side having said fourth end surface to fix said second pedestal to said second case; and the first and second cases (160, 260) each include a large-diameter portion with a relatively large inner diameter and a small-diameter portion with a relatively small inner diameter, and flange portions (141, 241) of first and second pedestals (140, 240) are each located in the large-diameter portion, and portions other than flange portions (141, 241) are each located in the small-diameter portion.