    <SEC-DOCUMENT>0001193125-25-064584-index.html : 20250327
    <SEC-HEADER>0001193125-25-064584.hdr.sgml : 20250327
    <ACCEPTANCE-DATETIME>20250327060514
    ACCESSION NUMBER:		0001193125-25-064584
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		39
    CONFORMED PERIOD OF REPORT:	20250507
    FILED AS OF DATE:		20250327
    DATE AS OF CHANGE:		20250327

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			PACKAGING CORP OF AMERICA
    		CENTRAL INDEX KEY:			0000075677
    		STANDARD INDUSTRIAL CLASSIFICATION:	PAPERBOARD CONTAINERS & BOXES [2650]
    		ORGANIZATION NAME:           	04 Manufacturing
    		EIN:				364277050
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-15399
    		FILM NUMBER:		25775017

    	BUSINESS ADDRESS:
    		STREET 1:		1 NORTH FIELD CT
    		CITY:			LAKE FOREST
    		STATE:			IL
    		ZIP:			60045
    		BUSINESS PHONE:		8474823000

    	MAIL ADDRESS:
    		STREET 1:		1 NORTH FIELD CT
    		CITY:			LAKE FOREST
    		STATE:			IL
    		ZIP:			60045
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>d880156ddef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: d880156ddef14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>2
    <FILENAME>pkg-20241231.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 2 - file: pkg-20241231.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>3
    <FILENAME>pkg-20241231_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
    <TEXT>
    Document 3 - file: pkg-20241231_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>pkg-20241231_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 4 - file: pkg-20241231_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>pkg-20241231_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 5 - file: pkg-20241231_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g880156g00s01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g880156g00s01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g880156g00s02.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g880156g00s02.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g880156g00s03.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g880156g00s03.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g880156g00s04.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g880156g00s04.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g880156g00s05.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g880156g00s05.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g880156g00s07.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g880156g00s07.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g880156g00s08.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g880156g00s08.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g880156g00s09.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g880156g00s09.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g880156g00s10.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g880156g00s10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>g880156g01g41.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g880156g01g41.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>g880156g01g42.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g880156g01g42.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>g880156g02g41.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g880156g02g41.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>g880156g40d89.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g880156g40d89.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>g880156g42i94.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g880156g42i94.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>g880156g48w68.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: g880156g48w68.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>g880156g69k10.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: g880156g69k10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>g880156paeg04.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: g880156paeg04.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>g880156page0004c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: g880156page0004c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>g880156page004a.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: g880156page004a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>g880156page004c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: g880156page004c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>g880156page004d.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: g880156page004d.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>g880156page04e.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: g880156page04e.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>g880156page4a2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: g880156page4a2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>g880156page4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: g880156page4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>32
    <FILENAME>R2.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: R2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>R3.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: R3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>34
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>35
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 35 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>37
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 37 - file: FilingSummary.html

    Document 37 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>39
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 39 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>40
    <FILENAME>0001193125-25-064584-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 40 - file: 0001193125-25-064584-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>41
    <FILENAME>d880156ddef14a_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 41 - file: d880156ddef14a_htm.html

    Document 41 - RAW XML: d880156ddef14a_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>