PACKAGING CORP OF AMERICA

Filing Type: 8-K

Filing Date: 20200428

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8-K

EX-99.1

XBRL TAXONOMY EXTENSION SCHEMA

EX-101.SCH

XBRL TAXONOMY EXTENSION LABEL LINKBASE

EX-101.LAB

XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE

EX-101.PRE

IDEA: XBRL DOCUMENT

EXCEL

IDEA: XBRL DOCUMENT

JSON

IDEA: XBRL DOCUMENT

XML

IDEA: XBRL DOCUMENT

XML

IDEA: XBRL DOCUMENT

XML

IDEA: XBRL DOCUMENT

XML

IDEA: XBRL DOCUMENT

ZIP

IDEA: XBRL DOCUMENT

XML