XML 34 R29.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Income Taxes (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2015
Income Tax Disclosure [Abstract] |
Schedule of Income Tax Provisions by Controlling and Noncontrolling Interests | The consolidated income tax provision includes taxes attributable to the controlling interest and, to a lesser extent, taxes attributable to non-controlling interests as follows:
| For the Three Months Ended March 31,
| 2014 |  | 2015
Controlling interests: |  |  |
Current tax | $ | 30.3 |  |  | $ | 32.0 |
Intangible-related deferred taxes | 16.9 |  |  | 20.4 |
Other deferred taxes | (1.6 | ) |  | 13.9 |
Total controlling interests | 45.6 |  |  | 66.3 |
Non-controlling interests: |  |  |
Current tax | $ | 3.5 |  |  | $ | 3.5 |
Deferred taxes | (0.2 | ) |  | (0.2 | )
Total non-controlling interests | 3.3 |  |  | 3.3 |
Provision for income taxes | $ | 48.9 |  |  | $ | 69.6 |
Income before income taxes (controlling interest) | $ | 122.8 |  |  | $ | 194.3 |
Effective tax rate attributable to controlling interest(1) | 37.1 | % |  | 34.1 | %
__________________________
(1) | 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: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration