Exhibit 24

                               POWER OF ATTORNEY

      I, Michael P. Rafferty, do hereby appoint Francis Aaron Henry and Paul N.
Beck, as my true and lawful attorneys-in-fact (each an "Attorney-in-Fact" and,
collectively, the "Attorneys-in-Fact"), each, individually or jointly, with
full power of substitution and resubstitution, to have full power and authority
to act in my name, place and stead and on my behalf to:

      1)    execute and deliver for and on behalf of me, in my capacity as one
            or more of an officer, director, or significant stockholder of
            MoneyGram International, Inc. or any of its subsidiaries
            (collectively, the "Company"), reports, schedules, or other filings
            with respect to the reporting of ownership of or transactions in
            securities of the Company required to be made under the Securities
            Exchange Act of 1934, as amended (the "Exchange Act") or the
            Securities Act of 1933, as amended (the "Securities Act"), and the
            rules thereunder, including without limitation, Schedules 13D and
            13G, Forms 3, 4 and 5 and Form 144 and any amendments, corrections,
            supplements or other changes thereto;

      2)    do and perform any and all acts for and on behalf of me that such
            Attorney-in-Fact (in his or her sole discretion) determines may be
            necessary or desirable to complete and execute any such reports,
            schedules or other filings and timely file same with the U.S.
            Securities and Exchange Commission and any stock exchange or other
            authority; and

      3)    take any other action of any type whatsoever in connection with the
            foregoing which, in the sole opinion of such Attorney-in-Fact, may
            be of benefit to, in the best interest of, or legally required by
            me, it being understood that the documents executed by such
            Attorney-in-Fact on behalf of me pursuant to this Power of Attorney
            shall be in such form and shall contain such terms and conditions as
            such Attorney-in-Fact may approve in his or her sole discretion.

      I hereby ratify and confirm all that the Attorneys-in-Fact shall lawfully
do or cause to be done by virtue of this Power of Attorney and the rights and
powers herein granted.  I acknowledge that the Attorneys-in-Fact, in serving in
such capacity at my request, are not assuming, nor is the Company assuming, (i)
any of my responsibilities to comply with the requirements of the Exchange Act
or the Securities Act or any liability for my failure to comply with such
requirements, or (ii) any obligation or liability I incur for profit
disgorgement under Section 16(b) of the Exchange Act.  I further acknowledge
that this Power of Attorney does not relieve me from responsibility for
compliance with my obligations under the Exchange Act or the Securities Act.

      This Power of Attorney shall remain in full force and effect until I am no
longer subject to Sections 13 and 16 of the Exchange Act and Rule 144 of the
Securities Act with respect to my holdings of and transactions in securities
issued by the Company, unless earlier revoked by me in a signed writing
delivered to the Attorneys-in-Fact.

      IN WITNESS WHEREOF, I have executed this Power of Attorney as of March 14,
2016.


                                       Signature: /s/ Michael P. Rafferty
                                                  ------------------------------
                                       Name:       Michael P. Rafferty