| Cover Page | Jul. 27, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 27, 2021 |
| Entity Registrant Name | GRAPHIC PACKAGING HOLDING CO |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-33988 |
| Entity Tax Identification Number | 26-0405422 |
| Entity Address, Address Line One | 1500 Riveredge Parkway |
| Entity Address, Address Line Two | Suite 100 |
| Entity Address, City or Town | Atlanta |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30328 |
| City Area Code | 770 |
| Local Phone Number | 240-7200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | GPK |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001408075 |
| Amendment Flag | false |
