| Component: (Network and Table) | |
|---|---|
| Network | 4143 - Disclosure - Income Taxes (Details 4) (http://www.amg.com/role/DisclosureIncomeTaxesDetails4) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001004434 (http://www.sec.gov/CIK) |
| Income Taxes | Period [Axis] | ||
|---|---|---|---|
2012-01-01 - 2012-12-31 | 2011-12-31 | 2010-12-31 | |
Income Taxes | |||
Deferred Tax Assets | |||
State net operating loss carryforwards | 23,900,000 | 26,500,000 | |
Deferred compensation | 23,900,000 | 17,500,000 | |
Foreign tax credit carryforwards | 20,100,000 | 15,100,000 | |
Tax benefit of uncertain tax positions | 17,600,000 | 11,600,000 | |
Accrued expenses | 6,000,000 | 11,600,000 | |
Capital loss carryforwards | 1,500,000 | 1,500,000 | |
Total deferred tax assets | 93,000,000 | 83,800,000 | |
Valuation allowance | (21,300,000) | (35,600,000) | |
Deferred tax assets, net of valuation allowance | 71,700,000 | 48,200,000 | |
Other | |||
Deferred Tax Liabilities | |||
Intangible asset amortization | (238,200,000) | (247,100,000) | |
Convertible securities interest | (189,200,000) | (171,100,000) | |
Non-deductible intangible amortization | (120,100,000) | (127,200,000) | |
Deferred revenue | (18,500,000) | (5,600,000) | |
Other | (2,800,000) | (3,200,000) | |
Total deferred tax liabilities | (568,800,000) | (554,200,000) | |
Net deferred tax liability | (497,100,000) | (506,000,000) | |
Accrued expenses | |||
State net operating loss carryforwards, expiration period | P15Y | ||
Foreign tax credit carryforwards, expiration period | P10Y | ||
Liability for uncertain tax positions including interest and related charges | 22,600,000 | 21,300,000 | 24,600,000 |
Accrued income tax interest and related charges | 2,200,000 | 1,600,000 | 3,200,000 |
Unrecognized tax benefits that, if recognized, would affect effective tax rate | 19,400,000 | 12,600,000 | 16,700,000 |
Liability for uncertain tax positions for foreign exchange | |||
Liability for uncertain tax positions including interest and related charges could increase, low end of range | |||
Liability for uncertain tax positions including interest and related charges could increase, high end of range | |||
Increase in liability due to as a result of tax examinations, settlements and expiration of statutes of limitations in the next 12 months | |||
Deferred tax liabilities for acquired intangible assets | |||
Liability for uncertain tax position that would generate tax benefits if settled | |||