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Business Segments Information (Results Of Operations By Business Segments ) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 4,971 | $ 4,684 | $ 4,570 | $ 4,147 | $ 4,888 | $ 4,456 | $ 4,248 | $ 3,816 | $ 18,372 | $ 17,408 | $ 15,264
Stock compensation |  |  |  |  |  |  |  |  | 120 | 216 |
Pretax earnings (loss) |  |  |  |  |  |  |  |  | 2,859 | 2,667 | 2,335
Total Assets | 20,497 |  |  |  | 20,390 |  |  |  | 20,497 | 20,390 | 19,589
Automation Solutions [Member] | Measurement & Analytical Instrumentation [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,807 | 3,604 | 3,070
Automation Solutions [Member] | Valves, Actuators & Regulators [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,794 | 3,749 | 2,659
Automation Solutions [Member] | Industrial Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,232 | 1,967 | 1,689
Automation Solutions [Member] | Process Control Systems & Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,369 | 2,121 | 2,000
Operating Segments [Member] | Automation Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 12,202 | 11,441 | 9,418
Pretax earnings (loss) |  |  |  |  |  |  |  |  | 1,947 | 1,886 | 1,522
Total Assets | 13,996 |  |  |  | 13,720 |  |  |  | 13,996 | 13,720 | 12,581
Operating Segments [Member] | Commercial & Residential Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 6,169 | 5,982 | 5,857
Pretax earnings (loss) |  |  |  |  |  |  |  |  | 1,271 | 1,352 | 1,358
Total Assets | 4,347 |  |  |  | 4,496 |  |  |  | 4,347 | 4,496 | 3,377
Operating Segments [Member] | Climate Technologies [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 4,313 | 4,454 | 4,212
Pretax earnings (loss) |  |  |  |  |  |  |  |  | 883 | 972 | 975
Total Assets | 2,885 |  |  |  | 2,936 |  |  |  | 2,885 | 2,936 | 2,547
Operating Segments [Member] | Tools & Home Products [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,856 | 1,528 | 1,645
Pretax earnings (loss) |  |  |  |  |  |  |  |  | 388 | 380 | 383
Total Assets | 1,462 |  |  |  | 1,560 |  |  |  | 1,462 | 1,560 | 830
Segment Reconciling Items [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Pension and postretirement costs |  |  |  |  |  |  |  |  | 108 | 79 | 27
Corporate, Non-Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock compensation |  |  |  |  |  |  |  |  | (120) | (216) | (110)
Pretax earnings (loss) |  |  |  |  |  |  |  |  | (173) | (275) | (297)
Corporate, Non-Segment [Member] | Corporate and other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Assets | $ 2,154 |  |  |  | $ 2,174 |  |  |  | 2,154 | 2,174 | 3,631
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1 | (15) | (11)
Pretax earnings (loss) |  |  |  |  |  |  |  |  | $ (174) | $ (159) | $ (165)

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