POWER OF ATTORNEY

Know all men by these presents that George R. Roberts does hereby make,
constitute and appoint William J. Janetschek, David J. Sorkin, Terence P.
Gallagher, and Christopher B. Lee, or any one of them, as a true and lawful
attorney-in-fact of the undersigned with full powers of substitution and
revocation, for and in the name, place and stead of the undersigned (both in the
undersigned's individual capacity and as a manager or member of any limited
liability company, as a partner of any partnership, as an officer of any
corporate or other entity, or in the undersigned's capacity in a position
similar to the foregoing at any entity, in each case, for which the undersigned
is otherwise authorized to sign), to execute and deliver such forms, schedules,
statements and other documents as may be required to be filed from time to time
with the Securities and Exchange Commission with respect to: (i) Sections 13(d),
13(g), 13(f), 13(h) and 16(a) of the Securities Exchange Act of 1934, as
amended, including without limitation, Schedule 13D, Schedule 13G, Form 13F,
Form 13H, Form 3, Form 4 and Form 5 and (ii) in connection with any applications
for EDGAR access codes, including without limitation the Form ID.

                                        /s/ George R. Roberts
                                        ----------------------------------------
                                        Name: George R. Roberts

Date: May 28, 2014