POWER OF ATTORNEY

              KNOW ALL BY THESE PRESENTS, that the undersigned hereby
constitutes and appoints Jonathan S. Mothner, Executive Vice President, General
Counsel and Secretary of SYNCHRONY FINANCIAL, a Delaware corporation (the
"Company"), and Danielle Do, Chief Corporate & Securities Counsel of the
Company, and either of them acting singly, as the undersigned's true and lawful
attorneys-in-fact, with full power and authority as hereinafter described on
behalf of and in the name, place and stead of the undersigned to:

              (1)   apply for electronic access codes with the United States
Securities and Exchange Commission (the "SEC") on my behalf;

              (2)   prepare, execute, acknowledge, deliver and file Forms 3, 4
and 5 (including any amendments thereto) with respect to the securities of the
Company, with the SEC and any stock exchange or similar authority as considered
necessary or advisable under Section 16(a) of the Securities Exchange Act of
1934 and the rules and regulations promulgated thereunder, as amended from time
to time (the "Exchange Act"); 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 Exchange Act.

              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 this 16 day of July, 2014.

                                        By:     /s/ Henry F. Greig
                                                --------------------------------
                                        Name:   Henry F. Greig