POWER OF ATTORNEY

	Know all by these presents, that the undersigned, Terri L. Kelly, hereby
constitutes and appoints each of Craig Pintoff, Joli Gross, Alison Walsh and
Allen Roberts of United Rentals, Inc. (the "Company"), each signing singly, the
undersigned's true and lawful attorney-in-fact to:

(1)	execute for and on behalf of the undersigned the Form ID application
required to be filed with the U.S. Securities and Exchange Commission (the
"SEC") in order to obtain SEC EDGAR filing codes (the "Form ID");

(2)	execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of the Company, Forms 3, 4, and 5, and any
amendments thereto (the "Section 16 Reports"), in accordance with Section 16(a)
of the Securities Exchange Act of 1934 and the rules thereunder (the "Section 16
Law"); and

(3)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute the Form ID and any such
Section 16 Reports, and file (or cause to be filed) the same with the SEC.

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 attorney-in-fact, in
serving in such capacity at the request of the undersigned, is not assuming, nor
is the Company assuming, any of the undersigned's responsibilities to comply
with the Section 16 Law.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file any Section 16 Reports 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 Company.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 30th day of April 2018.

Signature:    	/s/ Terri L. Kelly

Print Name:      Terri L. Kelly