v3.26.1
BUSINESS SEGMENTS - Schedule of Financial Information By Geographic Area (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations $ 4,873 $ 4,553 $ 13,781 $ 13,161
Americas        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 2,537 2,341 7,108 6,700
AMEA        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,475 1,356 4,043 3,962
Europe        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 861 856 2,630 2,499
Software & Systems        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,644 1,480 4,600 4,312
Software & Systems | Americas        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 811 715 2,204 2,047
Software & Systems | AMEA        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 497 429 1,345 1,255
Software & Systems | Europe        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 336 336 1,051 1,010
Intelligent Devices        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 2,677 2,535 7,580 7,301
Intelligent Devices | Americas        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,317 1,232 3,725 3,521
Intelligent Devices | AMEA        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 915 866 2,524 2,535
Intelligent Devices | Europe        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 445 437 1,331 1,245
Operating Segments | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 552 538 1,601 1,548
Operating Segments | Americas | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 409 394 1,179 1,132
Operating Segments | AMEA | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 63 61 174 172
Operating Segments | Europe | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 80 83 248 244
Operating Segments | Software & Systems | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,199 1,120 3,332 3,235
Operating Segments | Software & Systems | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 445 360 1,268 1,077
Operating Segments | Software & Systems | Americas | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 606 551 1,631 1,552
Operating Segments | Software & Systems | Americas | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 205 164 573 495
Operating Segments | Software & Systems | AMEA | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 355 333 960 965
Operating Segments | Software & Systems | AMEA | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 142 96 385 290
Operating Segments | Software & Systems | Europe | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 238 236 741 718
Operating Segments | Software & Systems | Europe | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 98 100 310 292
Operating Segments | Intelligent Devices | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,091 1,013 3,111 2,986
Operating Segments | Intelligent Devices | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,586 1,522 4,469 4,315
Operating Segments | Intelligent Devices | Americas | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 570 509 1,598 1,486
Operating Segments | Intelligent Devices | Americas | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 747 723 2,127 2,035
Operating Segments | Intelligent Devices | AMEA | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 363 351 1,034 1,045
Operating Segments | Intelligent Devices | AMEA | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 552 515 1,490 1,490
Operating Segments | Intelligent Devices | Europe | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 158 153 479 455
Operating Segments | Intelligent Devices | Europe | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations $ 287 $ 284 $ 852 $ 790