Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000016868-19-000011-index-headers.html | 2019-02-01 16:13:50 | |
| 0000016868-19-000011-index.html | 2019-02-01 16:13:50 | |
| 0000016868-19-000011.txt | 2019-02-01 16:13:50 | |
 0000016868-19-000011-xbrl.zip | 483525 | 2019-02-01 16:13:50 |
| a2018annual6k.htm | 24469 | 2019-02-01 16:13:50 |
| a2018annualceocfocertifica.htm | 25905 | 2019-02-01 16:13:50 |
| a2018annualfsnotes.htm | 2194840 | 2019-02-01 16:13:50 |
| a2018annualstatsmda.htm | 1749674 | 2019-02-01 16:13:50 |
| cni-20181231.xml | 5129445 | 2019-02-01 16:13:50 |
| cni-20181231.xsd | 117569 | 2019-02-01 16:13:50 |
| cni-20181231_cal.xml | 149010 | 2019-02-01 16:13:50 |
| cni-20181231_def.xml | 602620 | 2019-02-01 16:13:50 |
| cni-20181231_lab.xml | 1522385 | 2019-02-01 16:13:50 |
| cni-20181231_pre.xml | 873332 | 2019-02-01 16:13:50 |
| FilingSummary.xml | 65570 | 2019-02-01 16:13:50 |
| Financial_Report.xlsx | 164324 | 2019-02-01 16:13:50 |
| R1.htm | 23733 | 2019-02-01 16:13:50 |
| R10.htm | 43013 | 2019-02-01 16:13:50 |
| R100.htm | 31808 | 2019-02-01 16:13:50 |
| R101.htm | 30458 | 2019-02-01 16:13:50 |
| R102.htm | 14767 | 2019-02-01 16:13:50 |
| R103.htm | 8459 | 2019-02-01 16:13:50 |
| R104.htm | 27134 | 2019-02-01 16:13:50 |
| R105.htm | 10502 | 2019-02-01 16:13:50 |
| R11.htm | 29031 | 2019-02-01 16:13:50 |
| R12.htm | 163720 | 2019-02-01 16:13:50 |
| R13.htm | 30493 | 2019-02-01 16:13:50 |
| R14.htm | 15917 | 2019-02-01 16:13:50 |
| R15.htm | 91386 | 2019-02-01 16:13:50 |
| R16.htm | 21219 | 2019-02-01 16:13:50 |
| R17.htm | 25922 | 2019-02-01 16:13:50 |
| R18.htm | 222821 | 2019-02-01 16:13:50 |
| R19.htm | 17440 | 2019-02-01 16:13:50 |
| R2.htm | 57831 | 2019-02-01 16:13:50 |
| R20.htm | 540867 | 2019-02-01 16:13:50 |
| R21.htm | 67748 | 2019-02-01 16:13:50 |
| R22.htm | 269731 | 2019-02-01 16:13:50 |
| R23.htm | 129472 | 2019-02-01 16:13:50 |
| R24.htm | 124700 | 2019-02-01 16:13:50 |
| R25.htm | 18662 | 2019-02-01 16:13:50 |
| R26.htm | 52748 | 2019-02-01 16:13:50 |
| R27.htm | 6150 | 2019-02-01 16:13:50 |
| R28.htm | 138597 | 2019-02-01 16:13:50 |
| R29.htm | 42331 | 2019-02-01 16:13:50 |
| R3.htm | 24761 | 2019-02-01 16:13:50 |
| R30.htm | 21024 | 2019-02-01 16:13:50 |
| R31.htm | 156990 | 2019-02-01 16:13:50 |
| R32.htm | 30508 | 2019-02-01 16:13:50 |
| R33.htm | 16165 | 2019-02-01 16:13:50 |
| R34.htm | 93647 | 2019-02-01 16:13:50 |
| R35.htm | 21206 | 2019-02-01 16:13:50 |
| R36.htm | 26074 | 2019-02-01 16:13:50 |
| R37.htm | 212240 | 2019-02-01 16:13:50 |
| R38.htm | 16994 | 2019-02-01 16:13:50 |
| R39.htm | 535602 | 2019-02-01 16:13:50 |
| R4.htm | 63965 | 2019-02-01 16:13:50 |
| R40.htm | 60650 | 2019-02-01 16:13:50 |
| R41.htm | 273306 | 2019-02-01 16:13:50 |
| R42.htm | 129153 | 2019-02-01 16:13:50 |
| R43.htm | 92138 | 2019-02-01 16:13:50 |
| R44.htm | 49155 | 2019-02-01 16:13:50 |
| R45.htm | 27166 | 2019-02-01 16:13:50 |
| R46.htm | 18323 | 2019-02-01 16:13:50 |
| R47.htm | 26730 | 2019-02-01 16:13:50 |
| R48.htm | 43400 | 2019-02-01 16:13:50 |
| R49.htm | 9645 | 2019-02-01 16:13:50 |
| R5.htm | 59163 | 2019-02-01 16:13:50 |
| R50.htm | 23335 | 2019-02-01 16:13:50 |
| R51.htm | 27530 | 2019-02-01 16:13:50 |
| R52.htm | 47349 | 2019-02-01 16:13:50 |
| R53.htm | 18583 | 2019-02-01 16:13:50 |
| R54.htm | 22036 | 2019-02-01 16:13:50 |
| R55.htm | 19701 | 2019-02-01 16:13:50 |
| R56.htm | 29371 | 2019-02-01 16:13:50 |
| R57.htm | 13512 | 2019-02-01 16:13:50 |
| R58.htm | 46720 | 2019-02-01 16:13:50 |
| R59.htm | 19622 | 2019-02-01 16:13:50 |
| R6.htm | 4619 | 2019-02-01 16:13:50 |
| R60.htm | 27788 | 2019-02-01 16:13:50 |
| R61.htm | 157097 | 2019-02-01 16:13:50 |
| R62.htm | 23339 | 2019-02-01 16:13:50 |
| R63.htm | 26079 | 2019-02-01 16:13:50 |
| R64.htm | 17542 | 2019-02-01 16:13:50 |
| R65.htm | 17545 | 2019-02-01 16:13:50 |
| R66.htm | 20435 | 2019-02-01 16:13:50 |
| R67.htm | 51226 | 2019-02-01 16:13:50 |
| R68.htm | 19762 | 2019-02-01 16:13:50 |
| R69.htm | 13089 | 2019-02-01 16:13:50 |
| R7.htm | 86709 | 2019-02-01 16:13:50 |
| R70.htm | 45044 | 2019-02-01 16:13:50 |
| R71.htm | 13723 | 2019-02-01 16:13:50 |
| R72.htm | 173163 | 2019-02-01 16:13:50 |
| R73.htm | 28691 | 2019-02-01 16:13:50 |
| R74.htm | 63846 | 2019-02-01 16:13:50 |
| R75.htm | 20543 | 2019-02-01 16:13:50 |
| R76.htm | 11701 | 2019-02-01 16:13:50 |
| R77.htm | 14677 | 2019-02-01 16:13:50 |
| R78.htm | 32920 | 2019-02-01 16:13:50 |
| R79.htm | 27425 | 2019-02-01 16:13:50 |
| R8.htm | 60180 | 2019-02-01 16:13:50 |
| R80.htm | 19315 | 2019-02-01 16:13:50 |
| R81.htm | 6157 | 2019-02-01 16:13:50 |
| R82.htm | 10146 | 2019-02-01 16:13:50 |
| R83.htm | 9176 | 2019-02-01 16:13:50 |
| R84.htm | 14906 | 2019-02-01 16:13:50 |
| R85.htm | 20701 | 2019-02-01 16:13:50 |
| R86.htm | 10713 | 2019-02-01 16:13:50 |
| R87.htm | 18048 | 2019-02-01 16:13:50 |
| R88.htm | 28576 | 2019-02-01 16:13:50 |
| R89.htm | 82557 | 2019-02-01 16:13:50 |
| R9.htm | 24261 | 2019-02-01 16:13:50 |
| R90.htm | 19207 | 2019-02-01 16:13:50 |
| R91.htm | 49289 | 2019-02-01 16:13:50 |
| R92.htm | 79547 | 2019-02-01 16:13:50 |
| R93.htm | 60332 | 2019-02-01 16:13:50 |
| R94.htm | 16965 | 2019-02-01 16:13:50 |
| R95.htm | 15924 | 2019-02-01 16:13:50 |
| R96.htm | 90438 | 2019-02-01 16:13:50 |
| R97.htm | 45672 | 2019-02-01 16:13:50 |
| R98.htm | 5751 | 2019-02-01 16:13:50 |
| R99.htm | 22889 | 2019-02-01 16:13:50 |
| report.css | 2768 | 2019-02-01 16:13:50 |
| Show.js | 1086 | 2019-02-01 16:13:50 |