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| 0000104889-23-000050.txt | 2023-08-02 08:32:13 | |
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| a2023q28-kexhibit991.htm | 689950 | 2023-08-02 08:32:13 |
| FilingSummary.xml | 1651 | 2023-08-02 08:32:13 |
| Financial_Report.xlsx | 5697 | 2023-08-02 08:32:13 |
| ghc-20230802.htm | 32668 | 2023-08-02 08:32:13 |
| ghc-20230802.xsd | 1902 | 2023-08-02 08:32:13 |
| ghc-20230802_htm.xml | 2728 | 2023-08-02 08:32:13 |
| ghc-20230802_lab.xml | 24139 | 2023-08-02 08:32:13 |
| ghc-20230802_pre.xml | 12513 | 2023-08-02 08:32:13 |
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| R1.htm | 38104 | 2023-08-02 08:32:13 |
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| Show.js | 1084 | 2023-08-02 08:32:13 |