Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000049826-21-000020-index-headers.html | 2021-05-06 16:43:12 | |
| 0000049826-21-000020-index.html | 2021-05-06 16:43:12 | |
| 0000049826-21-000020.txt | 2021-05-06 16:43:12 | |
 0000049826-21-000020-xbrl.zip | 148569 | 2021-05-06 16:43:12 |
| FilingSummary.xml | 21449 | 2021-05-06 16:43:12 |
| Financial_Report.xlsx | 45851 | 2021-05-06 16:43:12 |
| itw-20210331.htm | 991179 | 2021-05-06 16:43:12 |
| itw-20210331.xsd | 23514 | 2021-05-06 16:43:12 |
| itw-20210331_cal.xml | 62554 | 2021-05-06 16:43:12 |
| itw-20210331_def.xml | 101754 | 2021-05-06 16:43:12 |
| itw-20210331_htm.xml | 473606 | 2021-05-06 16:43:12 |
| itw-20210331_lab.xml | 325620 | 2021-05-06 16:43:12 |
| itw-20210331_pre.xml | 196597 | 2021-05-06 16:43:12 |
| itw1q21-exhibit31.htm | 21974 | 2021-05-06 16:43:12 |
| itw1q21-exhibit32.htm | 7885 | 2021-05-06 16:43:12 |
| MetaLinks.json | 385918 | 2021-05-06 16:43:12 |
| R1.htm | 70370 | 2021-05-06 16:43:12 |
| R10.htm | 5608 | 2021-05-06 16:43:12 |
| R11.htm | 45234 | 2021-05-06 16:43:12 |
| R12.htm | 7988 | 2021-05-06 16:43:12 |
| R13.htm | 12140 | 2021-05-06 16:43:12 |
| R14.htm | 28374 | 2021-05-06 16:43:12 |
| R15.htm | 9862 | 2021-05-06 16:43:12 |
| R16.htm | 24160 | 2021-05-06 16:43:12 |
| R17.htm | 8937 | 2021-05-06 16:43:12 |
| R18.htm | 5054 | 2021-05-06 16:43:12 |
| R19.htm | 27626 | 2021-05-06 16:43:12 |
| R2.htm | 56654 | 2021-05-06 16:43:12 |
| R20.htm | 18634 | 2021-05-06 16:43:12 |
| R21.htm | 13165 | 2021-05-06 16:43:12 |
| R22.htm | 24001 | 2021-05-06 16:43:12 |
| R23.htm | 8214 | 2021-05-06 16:43:12 |
| R24.htm | 21480 | 2021-05-06 16:43:12 |
| R25.htm | 5957 | 2021-05-06 16:43:12 |
| R26.htm | 25176 | 2021-05-06 16:43:12 |
| R27.htm | 9159 | 2021-05-06 16:43:12 |
| R28.htm | 13725 | 2021-05-06 16:43:12 |
| R29.htm | 22769 | 2021-05-06 16:43:12 |
| R3.htm | 25639 | 2021-05-06 16:43:12 |
| R30.htm | 12400 | 2021-05-06 16:43:12 |
| R31.htm | 19218 | 2021-05-06 16:43:12 |
| R32.htm | 6043 | 2021-05-06 16:43:12 |
| R33.htm | 34615 | 2021-05-06 16:43:12 |
| R34.htm | 28790 | 2021-05-06 16:43:12 |
| R35.htm | 4345 | 2021-05-06 16:43:12 |
| R36.htm | 7440 | 2021-05-06 16:43:12 |
| R4.htm | 98293 | 2021-05-06 16:43:12 |
| R5.htm | 8837 | 2021-05-06 16:43:12 |
| R6.htm | 44440 | 2021-05-06 16:43:12 |
| R7.htm | 4498 | 2021-05-06 16:43:12 |
| R8.htm | 89815 | 2021-05-06 16:43:12 |
| R9.htm | 5833 | 2021-05-06 16:43:12 |
| report.css | 2767 | 2021-05-06 16:43:12 |
| Show.js | 1085 | 2021-05-06 16:43:12 |