| Goodwill and other intangible assets |
Goodwill and other intangible assets Our reporting units are the same as our reportable operating segments, Industrial Precision Solutions ("IPS"), Medical and Fluid Solutions ("MFS"), and the Advanced Technology Solutions ("ATS") segments. Changes in the carrying amount of goodwill for the nine months ended July 31, 2026 by operating segment: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IPS | | MFS | | ATS | | Total | | Balance at October 31, 2025 | | $ | 1,210,366 | | | $ | 1,647,468 | | | $ | 446,851 | | | $ | 3,304,685 | | | | | | | | | | | | | | | | | | | | | Currency effect | | 9,736 | | | (34) | | | 1,433 | | | 11,135 | | | Balance at July 31, 2026 | | $ | 1,220,102 | | | $ | 1,647,434 | | | $ | 448,284 | | | $ | 3,315,820 | |
Information regarding intangible assets subject to amortization: | | | | | | | | | | | | | | | | | | | | | | | July 31, 2026 | | | Carrying Amount | | Accumulated Amortization | | Net Book Value | | Customer relationships | | $ | 902,320 | | | $ | 425,531 | | | $ | 476,789 | | | Patent/technology costs | | 235,713 | | | 170,483 | | | 65,230 | | | Trade name | | 169,271 | | | 84,947 | | | 84,324 | | | | | | | | | | | | | | | | | Total | | $ | 1,307,304 | | | $ | 680,961 | | | $ | 626,343 | | | | | | | | | | | October 31, 2025 | | | Carrying Amount | | Accumulated Amortization | | Net Book Value | | Customer relationships | | $ | 899,402 | | | $ | 390,751 | | | $ | 508,651 | | | Patent/technology costs | | 235,255 | | | 155,865 | | | 79,390 | | | Trade name | | 169,127 | | | 75,581 | | | 93,546 | | | Non-compete agreements | | 8,596 | | | 8,596 | | | — | | | Other | | 929 | | | 929 | | | — | | | Total | | $ | 1,313,309 | | | $ | 631,722 | | | $ | 681,587 | |
Amortization expense for the three months ended July 31, 2026 and 2025 was $19,345 and $20,092, respectively. Amortization expense for the nine months ended July 31, 2026 and 2025 was $58,320 and $59,099, respectively.
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