Exhibit 24

                                POWER OF ATTORNEY

Know all men by these presents that William J. Janetschek does hereby make,
constitute and appoint 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/ William J. Janetschek
                                        ---------------------------------------
                                        Name: William J. Janetschek

Date: May 28, 2014