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|---|---|---|
 0001408075-20-000036-index-headers.html | 2020-10-20 09:10:04 | |
| 0001408075-20-000036-index.html | 2020-10-20 09:10:04 | |
| 0001408075-20-000036.txt | 2020-10-20 09:10:04 | |
 0001408075-20-000036-xbrl.zip | 43757 | 2020-10-20 09:10:04 |
| exhibit101executedq320.htm | 129006 | 2020-10-20 09:10:04 |
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| Financial_Report.xlsx | 5470 | 2020-10-20 09:10:04 |
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| gpk-20201015.xsd | 2437 | 2020-10-20 09:10:04 |
| gpk-20201015_cal.xml | 725 | 2020-10-20 09:10:04 |
| gpk-20201015_def.xml | 1662 | 2020-10-20 09:10:04 |
| gpk-20201015_htm.xml | 10956 | 2020-10-20 09:10:04 |
| gpk-20201015_lab.xml | 25293 | 2020-10-20 09:10:04 |
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| gpkexhibit9912020q38-k.htm | 361693 | 2020-10-20 09:10:04 |
| MetaLinks.json | 17938 | 2020-10-20 09:10:04 |
| R1.htm | 40161 | 2020-10-20 09:10:04 |
| report.css | 2767 | 2020-10-20 09:10:04 |
| Show.js | 1085 | 2020-10-20 09:10:04 |