Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000022356-23-000037-index-headers.html | 2023-05-04 15:42:10 | |
| 0000022356-23-000037-index.html | 2023-05-04 15:42:10 | |
| 0000022356-23-000037.txt | 2023-05-04 15:42:10 | |
 0000022356-23-000037-xbrl.zip | 590959 | 2023-05-04 15:42:10 |
| cbsh-20230331.htm | 4964759 | 2023-05-04 15:42:10 |
| cbsh-20230331.xsd | 118150 | 2023-05-04 15:42:10 |
| cbsh-20230331_cal.xml | 139059 | 2023-05-04 15:42:10 |
| cbsh-20230331_def.xml | 534466 | 2023-05-04 15:42:10 |
| cbsh-20230331_htm.xml | 5880276 | 2023-05-04 15:42:10 |
| cbsh-20230331_lab.xml | 1104033 | 2023-05-04 15:42:10 |
| cbsh-20230331_pre.xml | 788973 | 2023-05-04 15:42:10 |
| cbsh3312023ex311.htm | 9633 | 2023-05-04 15:42:10 |
| cbsh3312023ex312.htm | 9798 | 2023-05-04 15:42:10 |
| cbsh3312023ex32.htm | 7487 | 2023-05-04 15:42:10 |
| FilingSummary.xml | 69535 | 2023-05-04 15:42:10 |
| Financial_Report.xlsx | 195579 | 2023-05-04 15:42:10 |
| MetaLinks.json | 1213065 | 2023-05-04 15:42:10 |
| R1.htm | 51554 | 2023-05-04 15:42:10 |
| R10.htm | 13247 | 2023-05-04 15:42:10 |
| R100.htm | 168441 | 2023-05-04 15:42:10 |
| R11.htm | 746996 | 2023-05-04 15:42:10 |
| R12.htm | 195531 | 2023-05-04 15:42:10 |
| R13.htm | 47116 | 2023-05-04 15:42:10 |
| R14.htm | 8362 | 2023-05-04 15:42:10 |
| R15.htm | 12257 | 2023-05-04 15:42:10 |
| R16.htm | 18569 | 2023-05-04 15:42:10 |
| R17.htm | 29168 | 2023-05-04 15:42:10 |
| R18.htm | 43916 | 2023-05-04 15:42:10 |
| R19.htm | 58773 | 2023-05-04 15:42:10 |
| R2.htm | 126992 | 2023-05-04 15:42:10 |
| R20.htm | 146841 | 2023-05-04 15:42:10 |
| R21.htm | 59724 | 2023-05-04 15:42:10 |
| R22.htm | 27249 | 2023-05-04 15:42:10 |
| R23.htm | 33863 | 2023-05-04 15:42:10 |
| R24.htm | 202881 | 2023-05-04 15:42:10 |
| R25.htm | 160567 | 2023-05-04 15:42:10 |
| R26.htm | 4933 | 2023-05-04 15:42:10 |
| R27.htm | 13010 | 2023-05-04 15:42:10 |
| R28.htm | 739144 | 2023-05-04 15:42:10 |
| R29.htm | 192110 | 2023-05-04 15:42:10 |
| R3.htm | 17589 | 2023-05-04 15:42:10 |
| R30.htm | 54804 | 2023-05-04 15:42:10 |
| R31.htm | 11302 | 2023-05-04 15:42:10 |
| R32.htm | 14978 | 2023-05-04 15:42:10 |
| R33.htm | 27338 | 2023-05-04 15:42:10 |
| R34.htm | 43378 | 2023-05-04 15:42:10 |
| R35.htm | 51705 | 2023-05-04 15:42:10 |
| R36.htm | 142292 | 2023-05-04 15:42:10 |
| R37.htm | 59883 | 2023-05-04 15:42:10 |
| R38.htm | 29331 | 2023-05-04 15:42:10 |
| R39.htm | 31159 | 2023-05-04 15:42:10 |
| R4.htm | 131776 | 2023-05-04 15:42:10 |
| R40.htm | 207411 | 2023-05-04 15:42:10 |
| R41.htm | 158424 | 2023-05-04 15:42:10 |
| R42.htm | 47987 | 2023-05-04 15:42:10 |
| R43.htm | 22258 | 2023-05-04 15:42:10 |
| R44.htm | 34570 | 2023-05-04 15:42:10 |
| R45.htm | 50332 | 2023-05-04 15:42:10 |
| R46.htm | 134819 | 2023-05-04 15:42:10 |
| R47.htm | 155634 | 2023-05-04 15:42:10 |
| R48.htm | 15423 | 2023-05-04 15:42:10 |
| R49.htm | 45123 | 2023-05-04 15:42:10 |
| R5.htm | 40755 | 2023-05-04 15:42:10 |
| R50.htm | 60397 | 2023-05-04 15:42:10 |
| R51.htm | 22312 | 2023-05-04 15:42:10 |
| R52.htm | 19752 | 2023-05-04 15:42:10 |
| R53.htm | 28493 | 2023-05-04 15:42:10 |
| R54.htm | 14561 | 2023-05-04 15:42:10 |
| R55.htm | 27548 | 2023-05-04 15:42:10 |
| R56.htm | 47622 | 2023-05-04 15:42:10 |
| R57.htm | 24337 | 2023-05-04 15:42:10 |
| R58.htm | 53558 | 2023-05-04 15:42:10 |
| R59.htm | 54520 | 2023-05-04 15:42:10 |
| R6.htm | 53438 | 2023-05-04 15:42:10 |
| R60.htm | 46279 | 2023-05-04 15:42:10 |
| R61.htm | 28305 | 2023-05-04 15:42:10 |
| R62.htm | 6832 | 2023-05-04 15:42:10 |
| R63.htm | 17892 | 2023-05-04 15:42:10 |
| R64.htm | 13156 | 2023-05-04 15:42:10 |
| R65.htm | 20671 | 2023-05-04 15:42:10 |
| R66.htm | 15278 | 2023-05-04 15:42:10 |
| R67.htm | 30892 | 2023-05-04 15:42:10 |
| R68.htm | 7713 | 2023-05-04 15:42:10 |
| R69.htm | 11876 | 2023-05-04 15:42:10 |
| R7.htm | 4447 | 2023-05-04 15:42:10 |
| R70.htm | 6047 | 2023-05-04 15:42:10 |
| R71.htm | 20608 | 2023-05-04 15:42:10 |
| R72.htm | 7677 | 2023-05-04 15:42:10 |
| R73.htm | 42536 | 2023-05-04 15:42:10 |
| R74.htm | 4986 | 2023-05-04 15:42:10 |
| R75.htm | 45677 | 2023-05-04 15:42:10 |
| R76.htm | 17173 | 2023-05-04 15:42:10 |
| R77.htm | 39494 | 2023-05-04 15:42:10 |
| R78.htm | 46709 | 2023-05-04 15:42:10 |
| R79.htm | 20960 | 2023-05-04 15:42:10 |
| R8.htm | 103898 | 2023-05-04 15:42:10 |
| R80.htm | 46456 | 2023-05-04 15:42:10 |
| R81.htm | 25177 | 2023-05-04 15:42:10 |
| R82.htm | 21671 | 2023-05-04 15:42:10 |
| R83.htm | 65266 | 2023-05-04 15:42:10 |
| R84.htm | 5447 | 2023-05-04 15:42:10 |
| R85.htm | 38984 | 2023-05-04 15:42:10 |
| R86.htm | 42741 | 2023-05-04 15:42:10 |
| R87.htm | 24007 | 2023-05-04 15:42:10 |
| R88.htm | 17532 | 2023-05-04 15:42:10 |
| R89.htm | 13916 | 2023-05-04 15:42:10 |
| R9.htm | 9071 | 2023-05-04 15:42:10 |
| R90.htm | 23834 | 2023-05-04 15:42:10 |
| R91.htm | 10400 | 2023-05-04 15:42:10 |
| R92.htm | 23088 | 2023-05-04 15:42:10 |
| R93.htm | 14113 | 2023-05-04 15:42:10 |
| R94.htm | 78814 | 2023-05-04 15:42:10 |
| R95.htm | 44501 | 2023-05-04 15:42:10 |
| R96.htm | 14080 | 2023-05-04 15:42:10 |
| R97.htm | 25401 | 2023-05-04 15:42:10 |
| R98.htm | 21479 | 2023-05-04 15:42:10 |
| R99.htm | 22616 | 2023-05-04 15:42:10 |
| report.css | 2768 | 2023-05-04 15:42:10 |
| restatedarticlesofincorpor.htm | 62144 | 2023-05-04 15:42:10 |
| Show.js | 1086 | 2023-05-04 15:42:10 |