Segment Information Segments - Additional Information (Detail) $ in Millions |
3 Months Ended | |
|---|---|---|
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Mar. 31, 2025
USD ($)
Integer
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Dec. 31, 2024
USD ($)
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| Segment Reporting Information | ||
| Goodwill | $ 350.6 | $ 349.1 |
| Number of Operating Segments | Integer | 3 | |
| Unum US | ||
| Segment Reporting Information | ||
| Goodwill | $ 280.0 | 280.0 |
| Colonial Life | ||
| Segment Reporting Information | ||
| Goodwill | 27.7 | 27.7 |
| Unum International | ||
| Segment Reporting Information | ||
| Goodwill | $ 42.9 | $ 41.4 |
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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