Document And Entity Information |
Oct. 23, 2019 |
|---|---|
| Document And Entity Information [Abstract] | |
| Entity Registrant Name | PACKAGING CORP OF AMERICA |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Central Index Key | 0000075677 |
| Document Period End Date | Oct. 23, 2019 |
| Entity Emerging Growth Company | false |
| Entity File Number | 1-15399 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 36-4277050 |
| Entity Address, Address Line One | 1 North Field Court |
| Entity Address, City or Town | Lake Forest |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60045 |
| City Area Code | 847 |
| Local Phone Number | 482-3000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of each class | Common Stock |
| Trading Symbol | PKG |
| Name of each exchange on which registered | NYSE |