| GOODWILL AND OTHER INTANGIBLE ASSETS - NET |
GOODWILL AND OTHER INTANGIBLE ASSETS—NET The following table summarizes the change in the carrying amount of goodwill for the nine months ended September 30, 2025, by reportable business segment: | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2024 | | Acquisitions | | Currency
Translation
Adjustment | | | | September 30, 2025 | Aerospace Technologies | $ | 3,028 | | | $ | (28) | | | $ | 33 | | | | | $ | 3,033 | | Industrial Automation | 9,164 | | | — | | | 239 | | | | | 9,403 | | Building Automation | 6,136 | | | 122 | | | 180 | | | | | 6,438 | | Energy and Sustainability Solutions | 2,598 | | | 1,281 | | | 15 | | | | | 3,894 | | | Corporate and All Other | 899 | | | — | | | 53 | | | | | 952 | | | Total Goodwill | $ | 21,825 | | | $ | 1,375 | | | $ | 520 | | | | | $ | 23,720 | |
Other intangible assets are comprised of: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2025 | | December 31, 2024 | Gross
Carrying
Amount | | Accumulated
Amortization | | Net
Carrying
Amount | | Gross
Carrying
Amount | | Accumulated
Amortization | | Net
Carrying
Amount | Definite-life intangibles | | | | | | | | | | | | | Patents and technology | $ | 3,720 | | | $ | (2,014) | | | $ | 1,706 | | | $ | 3,513 | | | $ | (1,849) | | | $ | 1,664 | | | Customer relationships | 7,152 | | | (2,566) | | | 4,586 | | | 6,411 | | | (2,251) | | | 4,160 | | | Trademarks | 446 | | | (326) | | | 120 | | | 398 | | | (296) | | | 102 | | | Other | 596 | | | (285) | | | 311 | | | 561 | | | (270) | | | 291 | | | Total definite-life intangibles—net | 11,914 | | | (5,191) | | | 6,723 | | | 10,883 | | | (4,666) | | | 6,217 | | Indefinite-life intangibles | | | | | | | | | | | | | Trademarks | 426 | | | — | | | 426 | | | 439 | | | — | | | 439 | | | Total Other intangible assets—net | $ | 12,340 | | | $ | (5,191) | | | $ | 7,149 | | | $ | 11,322 | | | $ | (4,666) | | | $ | 6,656 | |
Intangible assets amortization expense was $141 million and $410 million for the three and nine months ended September 30, 2025, respectively, and $120 million and $275 million for the three and nine months ended September 30, 2024, respectively.
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