v3.26.1
BUSINESS SEGMENTS - Schedule of Financial Information By Geographic Area (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations $ 4,562 $ 4,432 $ 8,908 $ 8,608
Americas        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 2,371 2,235 4,570 4,359
AMEA        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,293 1,331 2,568 2,606
Europe        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 898 866 1,770 1,643
Software & Systems        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,503 1,451 2,956 2,833
Software & Systems | Americas        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 703 662 1,392 1,332
Software & Systems | AMEA        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 437 431 848 826
Software & Systems | Europe        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 363 358 716 675
Intelligent Devices        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 2,512 2,459 4,902 4,765
Intelligent Devices | Americas        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,266 1,192 2,408 2,289
Intelligent Devices | AMEA        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 800 842 1,608 1,668
Intelligent Devices | Europe        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 446 425 886 808
Operating Segments | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 547 522 1,050 1,010
Operating Segments | Americas | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 402 381 770 738
Operating Segments | AMEA | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 56 58 112 112
Operating Segments | Europe | Safety & Productivity        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 89 83 168 160
Operating Segments | Software & Systems | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,089 1,093 2,133 2,116
Operating Segments | Software & Systems | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 414 358 823 717
Operating Segments | Software & Systems | Americas | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 521 507 1,024 1,002
Operating Segments | Software & Systems | Americas | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 182 155 368 330
Operating Segments | Software & Systems | AMEA | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 311 330 605 632
Operating Segments | Software & Systems | AMEA | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 126 101 243 194
Operating Segments | Software & Systems | Europe | Control Systems & Software        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 257 256 504 482
Operating Segments | Software & Systems | Europe | Test & Measurement        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 106 102 212 193
Operating Segments | Intelligent Devices | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,024 1,000 2,020 1,972
Operating Segments | Intelligent Devices | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 1,488 1,459 2,882 2,793
Operating Segments | Intelligent Devices | Americas | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 537 492 1,028 977
Operating Segments | Intelligent Devices | Americas | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 729 700 1,380 1,312
Operating Segments | Intelligent Devices | AMEA | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 333 355 671 693
Operating Segments | Intelligent Devices | AMEA | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 467 487 937 975
Operating Segments | Intelligent Devices | Europe | Sensors        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations 154 153 321 302
Operating Segments | Intelligent Devices | Europe | Final Control        
Disaggregation of Revenue [Line Items]        
Sales, excluding intersegment eliminations $ 292 $ 272 $ 565 $ 506