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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, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 4,947 | $ 4,697 | $ 4,431 | $ 4,161 | $ 4,558 | $ 3,914 | $ 4,162 | $ 4,151 | $ 18,236 | $ 16,785 | $ 18,372
Stock compensation |  |  |  |  |  |  |  |  | 224 | 110 | 120
Earnings before income taxes |  |  |  |  |  |  |  |  | 2,912 | 2,335 | 2,859
Total Assets | 24,715 |  |  |  | 22,882 |  |  |  | 24,715 | 22,882 | 20,497
Interest Income (Expense), Nonoperating, Net |  |  |  |  |  |  |  |  | (154) | (156) | (174)
Automation Solutions [Member] | Measurement & Analytical Instrumentation [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,071 | 3,108 | 3,615
Automation Solutions [Member] | Valves, Actuators & Regulators [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,483 | 3,589 | 3,794
Automation Solutions [Member] | Industrial Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,266 | 2,012 | 2,232
Automation Solutions [Member] | Systems & Software [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,790 | 2,446 | 2,561
Operating Segments [Member] | Automation Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 11,610 | 11,155 | 12,202
Earnings before income taxes |  |  |  |  |  |  |  |  | 1,948 | 1,523 | 1,947
Total Assets | 15,823 |  |  |  | 14,250 |  |  |  | 15,823 | 14,250 | 13,996
Operating Segments [Member] | Commercial & Residential Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 6,653 | 5,643 | 6,169
Earnings before income taxes |  |  |  |  |  |  |  |  | 1,364 | 1,118 | 1,271
Total Assets | 4,867 |  |  |  | 4,556 |  |  |  | 4,867 | 4,556 | 4,347
Operating Segments [Member] | Climate Technologies [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 4,748 | 3,980 | 4,313
Earnings before income taxes |  |  |  |  |  |  |  |  | 965 | 801 | 883
Total Assets | 3,269 |  |  |  | 3,065 |  |  |  | 3,269 | 3,065 | 2,885
Operating Segments [Member] | Tools & Home Products [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,905 | 1,663 | 1,856
Earnings before income taxes |  |  |  |  |  |  |  |  | 399 | 317 | 388
Total Assets | 1,598 |  |  |  | 1,491 |  |  |  | 1,598 | 1,491 | 1,462
Segment Reconciling Items [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unallocated pension and postretirement costs |  |  |  |  |  |  |  |  | 94 | 53 | 108
Interest Income (Expense), Nonoperating, Net |  |  |  |  |  |  |  |  | (154) | (156) | (174)
Corporate, Non-Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock compensation |  |  |  |  |  |  |  |  | (224) | (110) | (120)
Earnings before income taxes |  |  |  |  |  |  |  |  | (116) | (93) | (173)
Corporate, Non-Segment [Member] | Corporate and other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Assets | $ 4,025 |  |  |  | $ 4,076 |  |  |  | 4,025 | 4,076 | 2,154
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ (27) | $ (13) | $ 1

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