LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS



	The undersigned, Jonathan P. Ward, constitutes and appoints Roderick A.
Palmore, Helen N. Kaminski and Brett J. Hart, and each of them, as the
undersigned's true and lawful attorney-in-fact and agent, with full power
of substitution and resubstitution, for the undersigned and in the
undersigned's name, place and stead, to sign (i) any and all statements of
beneficial ownership of securities on Forms 3, 4 and 5, as required under
Section 16(a) of the Securities Exchange Act of 1934, and (ii) Form 144
Notice of Proposed Sale of Securities, pursuant to Rule 144 under the
Securities Act of 1933, and to file the same with all exhibits thereto and
other documents in connection therewith with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each act and thing requisite and necessary to
be done under said Section 16(a) and Rule 144, as fully to all intents and
purposes as the undersigned might or could do in person, hereby ratifying
and confirming all that said attorney-in-fact and agent may lawfully do or
cause to be done by virtue hereof.

	A copy of this power of attorney
shall be filed with the Securities and Exchange Commission and with any
applicable stock exchange.  The authorization set forth above shall
continue in full force and effect until the undersigned revokes such
authorization by written instructions to the attorney-in-fact.  The
undersigned acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, are not assuming any of
the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934 or Rule 144 of the Securities Act of 1933.



Dated: July 22, 2005

/s/ Jonathan P. Ward