POWER OF ATTORNEY

            Know all by these presents, that the undersigned hereby removes all
prior attorneys-in-fact and hereby constitutes and appoints each of
Pasha Zargarof, Marie Ly and Cindy Kee, signing singly, and with full power of
substitution, as the undersigned's true and lawful attorney-in-fact to:

            (1)    prepare and execute, for and on behalf of the undersigned,
                   in the undersigned's capacity as an officer and/or director
                   of CBRE Group, Inc. (the "Company"), Forms 3, 4 and 5 and
                   Form ID in accordance with Section 16(a) of the Securities
                   Exchange Act of 1934, as amended and the rules thereunder;

            (2)    do and perform any and all acts for and on behalf of the
                   undersigned which may be necessary or desirable to complete
                   and execute any such Form 3, 4 or 5, or Form ID, complete and
                   execute any amendment or amendments thereto, and timely file
                   such form with the United States Securities and Exchange
                   Commission and any stock exchange or similar authority; and

            (3)	   take any other action of any type whatsoever in connection
                   with the foregoing which, in the opinion of such
                   attorney-in-fact, may be of benefit to, in the best interest
                   of, or legally required by, the undersigned, it being
                   understood that the documents executed by such
                   attorney-in-fact on behalf of the undersigned 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 such attorney-in-fact's discretion.

             The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934, as amended.

              This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4 and 5 with respect to
the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing delivered
to the foregoing attorneys-in-fact.

              IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of September 7, 2017.

                                     /s/ Laurence H. Midler
                                     ---------------------------------
                                     Laurence H. Midler