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| 0000016868-23-000013.txt | 2023-01-31 16:03:30 | |
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| a2022annualceocfocertifica.htm | 18865 | 2023-01-31 16:03:30 |
| a2022annualstatsmda.htm | 1596461 | 2023-01-31 16:03:30 |
| cni-20221231.htm | 3582902 | 2023-01-31 16:03:30 |
| cni-20221231.xsd | 142542 | 2023-01-31 16:03:30 |
| cni-20221231_cal.xml | 191633 | 2023-01-31 16:03:30 |
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| cni-20221231_lab.xml | 1559814 | 2023-01-31 16:03:30 |
| cni-20221231_pre.xml | 1089548 | 2023-01-31 16:03:30 |
| FilingSummary.xml | 81264 | 2023-01-31 16:03:30 |
| Financial_Report.xlsx | 250269 | 2023-01-31 16:03:30 |
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| report.css | 2768 | 2023-01-31 16:03:30 |
| Show.js | 1086 | 2023-01-31 16:03:30 |