LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS

	The undersigned, Cynthia B. Carroll, 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 re-substitution, 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 under 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:  June 28, 2006

/s/ Cynthia B. Carroll