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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill for the three months ended March 31, 2022, by reportable business segment, were as follows:
| FMT |  | HST |  | FSDP |  | IDEX
Goodwill | $ | 701.7 |  |  | $ | 1,264.3 |  |  | $ | 402.3 |  |  | $ | 2,368.3 |
Accumulated goodwill impairment losses | (20.7) |  |  | (149.8) |  |  | (30.1) |  |  | (200.6) |
Balance at December 31, 2021 | 681.0 |  |  | 1,114.5 |  |  | 372.2 |  |  | 2,167.7 |
Foreign currency translation | (2.3) |  |  | (5.8) |  |  | (2.4) |  |  | (10.5) |
Acquisitions | 55.0 |  |  | — |  |  | — |  |  | 55.0 |
Acquisition adjustments | 0.3 |  |  | 1.0 |  |  | — |  |  | 1.3 |
Balance at March 31, 2022 | $ | 734.0 |  |  | $ | 1,109.7 |  |  | $ | 369.8 |  |  | $ | 2,213.5 |
Schedule of Gross Carrying Value and Accumulated Amortization For Each Major Class of Intangible Asset | The following table provides the gross carrying value and accumulated amortization for each major class of intangible asset at March 31, 2022 and December 31, 2021:
| At March 31, 2022 |  |  |  | At December 31, 2021
| Gross Carrying Amount |  | Accumulated Amortization |  | Net |  | Weighted Average Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Patents | $ | 3.2 |  |  | $ | (2.1) |  |  | $ | 1.1 |  |  | 10 |  | $ | 3.2 |  |  | $ | (2.0) |  |  | $ | 1.2 |
Trade names | 153.6 |  |  | (74.7) |  |  | 78.9 |  |  | 15 |  | 140.9 |  |  | (72.4) |  |  | 68.5 |
Customer relationships | 524.6 |  |  | (152.6) |  |  | 372.0 |  |  | 13 |  | 495.9 |  |  | (144.2) |  |  | 351.7 |
Unpatented technology | 143.0 |  |  | (61.5) |  |  | 81.5 |  |  | 13 |  | 143.8 |  |  | (58.8) |  |  | 85.0 |
Software | 4.8 |  |  | — |  |  | 4.8 |  |  | 5 |  | — |  |  | — |  |  | — |
Total amortized intangible assets | 829.2 |  |  | (290.9) |  |  | 538.3 |  |  |  |  | 783.8 |  |  | (277.4) |  |  | 506.4 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Banjo trade name | 62.1 |  |  | — |  |  | 62.1 |  |  |  |  | 62.1 |  |  | — |  |  | 62.1 |
Akron Brass trade name | 28.8 |  |  | — |  |  | 28.8 |  |  |  |  | 28.8 |  |  | — |  |  | 28.8 |
Total intangible assets | $ | 920.1 |  |  | $ | (290.9) |  |  | $ | 629.2 |  |  |  |  | $ | 874.7 |  |  | $ | (277.4) |  |  | $ | 597.3 |

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