Intangible Assets, Net - Narrative (Details) - USD ($) $ in Millions |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2022 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Indefinite-lived Intangible Assets [Line Items] | |||
| Impairment of intangible assets, indefinite-lived (excluding goodwill) | $ 7.3 | ||
| Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] | Impairment Of Intangible Assets And Other Assets | Impairment Of Intangible Assets And Other Assets | |
| Amortization expense | $ 37.2 | $ 37.8 | |
| Portfolio Management | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| Impairment of intangible assets, indefinite-lived (excluding goodwill) | $ 3.8 | 6.4 | |
| Retirement Solutions | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| Impairment of intangible assets, indefinite-lived (excluding goodwill) | $ 3.5 | ||
| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Indicates line item in statement of income or comprehensive income that includes impairment of indefinite-lived intangible asset excluding goodwill. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|