XML 52 R38.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Income Taxes (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2024
Income Tax Disclosure [Abstract] |
Schedule of Income Tax Provisions by Controlling and Noncontrolling Interests | The following table presents the consolidated provision for income taxes:
| For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2023 |  | 2024 |  | 2023 |  | 2024
Controlling interest(1) | $31.6 |  | $40.9 |  | $74.1 |  | $94.2
Non-controlling interests | 1.2 |  | 2.4 |  | 3.6 |  | 4.5
Income tax expense | $32.8 |  | $43.3 |  | $77.7 |  | $98.7
Income before income taxes (controlling interest) | $156.9 |  | $116.9 |  | $333.9 |  | $320.0
Effective tax rate (controlling interest)(2) | 20.1% |  | 35.0% |  | 22.2% |  | 29.4%
___________________________ (1)For the three months ended June 30, 2023 and 2024, income tax expense (controlling interest) included intangible-related deferred tax expense of $15.0 million and $17.1 million, respectively. For the six months ended June 30, 2023 and 2024, income tax expense (controlling interest) included intangible-related deferred tax expense of $29.8 million and $34.2 million, respectively. (2)Taxes attributable to the controlling interest divided by income before income taxes (controlling interest).

X
- Definition Tabular disclosure of the components of income tax expense attributable to controlling and non-controlling interests for each year presented including, income before income taxes and effective tax rate attributable to controlling interests. + References No definition available. + Details
Name: | amg_ScheduleOfComponentsOfIncomeTaxExpenseBenefitByControllingAndNoncontrollingInterestsTableTextBlock
Namespace Prefix: | amg_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration