$AMG
AFFILIATED MANAGERS GROUP, INC. Stock $amg

$amg Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000100443424000030 Filed on May 07, 2024

Income Statement

Concept	2024 Q2	2024 Q1	2023 Q4
Revenue	$500.3M	$499.9M	$502.7M
YoY Change	-2.38%	-3.38%	-6.86%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$304.7M	$91.70M	$329.3M
YoY Change	-2.99%	-71.29%	-14.31%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$10.40M	$10.30M	$13.80M
YoY Change	-34.18%	-36.42%	-14.29%
% of Gross Profit
Operating Expenses	$325.9M	$381.3M	$352.7M
YoY Change	-5.18%	8.94%	-16.58%
Operating Profit
YoY Change
Interest Expense	$3.900M	$29.90M	$124.1M
YoY Change	-92.41%	-54.77%	-58.65%
% of Operating Profit
Other Income/Expense, Net			$0.00
YoY Change			-100.0%
Pretax Income	$178.3M	$254.1M	$274.1M
YoY Change	-19.03%	8.82%	-74.11%
Income Tax	$43.30M	$55.40M	$29.80M
% Of Pretax Income	24.28%	21.8%	10.87%
Net Earnings	$76.00M	$149.8M	$196.2M
YoY Change	-39.35%	11.38%	-74.78%
Net Earnings / Revenue	15.19%	29.97%	39.03%
Basic Earnings Per Share	$2.42	$4.56
Diluted Earnings Per Share	$2.15	$4.14	$4.75
COMMON SHARES
Basic Shares Outstanding	31.86M shares	32.79M shares	33.81M shares
Diluted Shares Outstanding	35.30M shares	40.10M shares

Balance Sheet

Concept	2024 Q2	2024 Q1	2023 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$865.5M	$1.142B	$813.6M
YoY Change	10.18%	37.16%	-29.01%
Cash & Equivalents	$865.5M	$793.4M	$813.6M
Short-Term Investments	$167.3M	$348.9M	$461.0M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$457.2M	$525.7M	$368.4M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.323B	$1.319B	$1.182B
YoY Change	3.94%	6.26%	58.62%
LONG-TERM ASSETS
Property, Plant & Equipment	$62.80M	$65.60M	$67.30M
YoY Change	-5.28%	-2.24%	-1.75%
Goodwill	$2.516B	$2.518B	$2.524B
YoY Change	-5.4%	-4.96%	-4.72%
Intangibles	$1.796B	$1.802B	$1.812B
YoY Change	-3.62%	-3.42%	-3.39%
Long-Term Investments	$2.859B	$93.60M	$3.230B
YoY Change	0.5%	-96.66%	3575.09%
Other Assets
YoY Change
Total Long-Term Assets	$7.522B	$7.706B	$7.878B
YoY Change	-2.23%	0.67%	-3.17%
TOTAL ASSETS
Total Short-Term Assets	$1.323B	$1.319B	$1.182B
Total Long-Term Assets	$7.522B	$7.706B	$7.878B
Total Assets	$8.845B	$9.025B	$9.060B
YoY Change	-1.35%	1.45%	2.01%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$637.3M	$634.1M	$628.5M
YoY Change	5.78%	-1.74%
Accrued Expenses			$566.2M
YoY Change			2.22%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$637.3M	$634.1M	$628.5M
YoY Change	5.78%	-1.74%	-19.25%
LONG-TERM LIABILITIES
Long-Term Debt	$2.525B	$2.525B	$2.538B
YoY Change	-0.44%	-0.43%	0.09%
Other Long-Term Liabilities	$529.7M	$464.6M	$466.3M
YoY Change	12.63%	-4.34%	1.0%
Total Long-Term Liabilities	$3.055B	$2.990B	$3.004B
YoY Change	1.6%	-1.06%	0.23%
TOTAL LIABILITIES
Total Short-Term Liabilities	$637.3M	$634.1M	$628.5M
Total Long-Term Liabilities	$3.055B	$2.990B	$3.004B
Total Liabilities	$5.514B	$4.111B	$5.472B
YoY Change	-0.97%	-26.9%	29.05%
SHAREHOLDERS EQUITY
Retained Earnings	$6.615B	$6.539B	$6.390B
YoY Change	10.67%	11.74%	11.74%
Common Stock	$713.4M	$712.7M	$742.0M
YoY Change	9.33%	26.25%	6.59%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$3.504B	$3.376B
YoY Change		18.11%	13.27%
Treasury Stock Shares
Shareholders Equity	$3.331B	$3.590B	$3.588B
YoY Change
Total Liabilities & Shareholders Equity	$8.845B	$9.025B	$9.060B
YoY Change	-1.35%	1.45%	2.01%

Cashflow Statement

Concept	2024 Q2	2024 Q1	2023 Q4
OPERATING ACTIVITIES
Net Income	$76.00M	$149.8M	$196.2M
YoY Change	-39.35%	11.38%	-74.78%
Depreciation, Depletion And Amortization	$10.40M	$10.30M	$13.80M
YoY Change	-34.18%	-36.42%	-14.29%
Cash From Operating Activities	$245.5M	$209.2M	$255.0M
YoY Change	160.06%	-10.9%	-1.43%
INVESTING ACTIVITIES
Capital Expenditures	$600.0K	$1.000M	$5.800M
YoY Change	-71.43%	-47.37%	152.17%
Acquisitions
YoY Change
Other Investing Activities	$240.9M	$75.50M	-$207.6M
YoY Change	4532.69%	-73.96%	-230.57%
Cash From Investing Activities	$240.3M	$74.50M	-$213.4M
YoY Change	7651.61%	-74.13%	-236.18%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$450.0M
YoY Change		1700.0%
Cash From Financing Activities	-413.8M	-$302.3M	-234.3M
YoY Change	179.03%	158.6%	-62.44%
NET CHANGE
Cash From Operating Activities	245.5M	$209.2M	255.0M
Cash From Investing Activities	240.3M	$74.50M	-213.4M
Cash From Financing Activities	-413.8M	-$302.3M	-234.3M
Net Change In Cash	72.00M	-$20.20M	-192.7M
YoY Change	-241.73%	-104.94%	-7.53%
FREE CASH FLOW
Cash From Operating Activities	$245.5M	$209.2M	$255.0M
Capital Expenditures	$600.0K	$1.000M	$5.800M
Free Cash Flow	$244.9M	$208.2M	$249.2M
YoY Change	165.33%	-10.61%	-2.81%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	222300000	usd
CY2024Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	240400000	usd
CY2023Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	97100000	usd
CY2024Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	91700000	usd
CY2023Q1	amg	Amortization And Impairments Of Intangible Assets AmortizationAndImpairmentsOfIntangibleAssets	12500000	usd
CY2024Q1	amg	Amortization And Impairments Of Intangible Assets AmortizationAndImpairmentsOfIntangibleAssets	7300000	usd
CY2023Q1	us-gaap	Interest Expense InterestExpense	30500000	usd
CY2024Q1	us-gaap	Interest Expense InterestExpense	29900000	usd
CY2023Q1	amg	Depreciation And Other Amortization DepreciationAndOtherAmortization	3700000	usd
CY2024Q1	amg	Depreciation And Other Amortization DepreciationAndOtherAmortization	3000000.0	usd
CY2023Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	14400000	usd
CY2024Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	9000000.0	usd
CY2023Q1	us-gaap	Operating Expenses OperatingExpenses	380500000	usd
CY2024Q1	us-gaap	Operating Expenses OperatingExpenses	381300000	usd
CY2023Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	58600000	usd
CY2024Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	117500000	usd
CY2023Q1	amg	Investment And Other Income Loss InvestmentAndOtherIncomeLoss	38000000.0	usd
CY2024Q1	amg	Investment And Other Income Loss InvestmentAndOtherIncomeLoss	18000000.0	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	233500000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	254100000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45000000.0	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	55400000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	188500000	usd
CY2024Q1	us-gaap	Profit Loss ProfitLoss	198700000	usd
CY2023Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	54000000.0	usd
CY2024Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	48900000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	134500000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	149800000	usd
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	35900000	shares
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32800000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39900000	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40100000	shares
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.74
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.56
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.47
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.14
CY2023Q1	us-gaap	Profit Loss ProfitLoss	188500000	usd
CY2024Q1	us-gaap	Profit Loss ProfitLoss	198700000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	26800000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	5600000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease After Adjustments And Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTax	200000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease After Adjustments And Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTax	300000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	400000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	400000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27400000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6300000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	215900000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	205000000.0	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	56300000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	45400000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	159600000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	159600000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	813600000	usd
CY2024Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	793400000	usd
CY2023Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	368400000	usd
CY2024Q1	us-gaap	Accounts Receivable Net AccountsReceivableNet	525700000	usd
CY2023Q4	us-gaap	Marketable Securities MarketableSecurities	461000000.0	usd
CY2024Q1	us-gaap	Marketable Securities MarketableSecurities	348900000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	2523600000	usd
CY2024Q1	us-gaap	Goodwill Goodwill	2517500000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1812400000	usd
CY2024Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1802300000	usd
CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	2288500000	usd
CY2024Q1	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	2214100000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	67300000	usd
CY2024Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	65600000	usd
CY2023Q4	us-gaap	Other Investments OtherInvestments	480900000	usd
CY2024Q1	us-gaap	Other Investments OtherInvestments	522900000	usd
CY2023Q4	amg	Other Investments And Other Assets OtherInvestmentsAndOtherAssets	243900000	usd
CY2024Q1	amg	Other Investments And Other Assets OtherInvestmentsAndOtherAssets	234200000	usd
CY2023Q4	us-gaap	Assets Assets	9059600000	usd
CY2024Q1	us-gaap	Assets Assets	9024600000	usd
CY2023Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	628500000	usd
CY2024Q1	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	634100000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	2537500000	usd
CY2024Q1	us-gaap	Long Term Debt LongTermDebt	2524900000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	463800000	usd
CY2024Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	487500000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	466300000	usd
CY2024Q1	us-gaap	Other Liabilities OtherLiabilities	464600000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	4096100000	usd
CY2024Q1	us-gaap	Liabilities Liabilities	4111100000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	393400000	usd
CY2024Q1	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	393000000.0	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2024Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2024Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	153000000.0	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	153000000.0	shares
CY2024Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	58500000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	58500000	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	600000	usd
CY2024Q1	us-gaap	Common Stock Value CommonStockValue	600000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	741400000	usd
CY2024Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	712100000	usd
CY2023Q4	amg	Accumulated Other Comprehensive Income Loss Attributable To Parent Net Of Tax AccumulatedOtherComprehensiveIncomeLossAttributableToParentNetOfTax	-167600000	usd
CY2024Q1	amg	Accumulated Other Comprehensive Income Loss Attributable To Parent Net Of Tax AccumulatedOtherComprehensiveIncomeLossAttributableToParentNetOfTax	-157800000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6389600000	usd
CY2024Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6539100000	usd
CY2023Q4	us-gaap	Stockholders Equity Before Treasury Stock StockholdersEquityBeforeTreasuryStock	6964000000	usd
CY2024Q1	us-gaap	Stockholders Equity Before Treasury Stock StockholdersEquityBeforeTreasuryStock	7094000000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	25300000	shares
CY2024Q1	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	26000000.0	shares
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3376100000	usd
CY2024Q1	us-gaap	Treasury Stock Value TreasuryStockValue	3503800000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	3587900000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	3590200000	usd
CY2023Q4	us-gaap	Other Minority Interests OtherMinorityInterests	982200000	usd
CY2024Q1	us-gaap	Other Minority Interests OtherMinorityInterests	930300000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4570100000	usd
CY2024Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4520500000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9059600000	usd
CY2024Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9024600000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4175600000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	188500000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27400000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14700000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-25100000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.01
CY2023Q1	us-gaap	Dividends Dividends	400000	usd
CY2023Q1	amg	Affiliate Equity Compensation Expense Including Adjustments And Portion Attributable To Noncontrolling Interest AffiliateEquityCompensationExpenseIncludingAdjustmentsAndPortionAttributableToNoncontrollingInterest	10400000	usd
CY2023Q1	amg	Noncontrolling Interest Increase Decrease From Subsidiary Equity Issuance NoncontrollingInterestIncreaseDecreaseFromSubsidiaryEquityIssuance	13300000	usd
CY2023Q1	amg	Noncontrolling Interest Increase Decrease From Purchase Of Interests NoncontrollingInterestIncreaseDecreaseFromPurchaseOfInterests	-500000	usd
CY2023Q1	amg	Redeemable Noncontrolling Interest Equity Change In Redemption Value RedeemableNoncontrollingInterestEquityChangeInRedemptionValue	-101700000	usd
CY2023Q1	amg	Noncontrolling Interest Increase Decrease From Contributions From Affiliate And Other NoncontrollingInterestIncreaseDecreaseFromContributionsFromAffiliateAndOther	-3300000	usd
CY2023Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	79500000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4219400000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4570100000	usd
CY2024Q1	us-gaap	Profit Loss ProfitLoss	198700000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6300000	usd
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	21100000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-18900000	usd
CY2024Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	151200000	usd
CY2024Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.01
CY2024Q1	us-gaap	Dividends Dividends	300000	usd
CY2024Q1	amg	Affiliate Equity Compensation Expense Including Adjustments And Portion Attributable To Noncontrolling Interest AffiliateEquityCompensationExpenseIncludingAdjustmentsAndPortionAttributableToNoncontrollingInterest	17000000.0	usd
CY2024Q1	amg	Noncontrolling Interest Increase Decrease From Subsidiary Equity Issuance NoncontrollingInterestIncreaseDecreaseFromSubsidiaryEquityIssuance	7300000	usd
CY2024Q1	amg	Noncontrolling Interest Increase Decrease From Purchase Of Interests NoncontrollingInterestIncreaseDecreaseFromPurchaseOfInterests	-9600000	usd
CY2024Q1	amg	Redeemable Noncontrolling Interest Equity Change In Redemption Value RedeemableNoncontrollingInterestEquityChangeInRedemptionValue	-18100000	usd
CY2024Q1	amg	Noncontrolling Interest Increase Decrease From Contributions From Affiliate And Other NoncontrollingInterestIncreaseDecreaseFromContributionsFromAffiliateAndOther	-20100000	usd
CY2024Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	81800000	usd
CY2024Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4520500000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	188500000	usd
CY2024Q1	us-gaap	Profit Loss ProfitLoss	198700000	usd
CY2023Q1	amg	Amortization And Impairments Of Intangible Assets AmortizationAndImpairmentsOfIntangibleAssets	12500000	usd
CY2024Q1	amg	Amortization And Impairments Of Intangible Assets AmortizationAndImpairmentsOfIntangibleAssets	7300000	usd
CY2023Q1	amg	Depreciation And Other Amortization DepreciationAndOtherAmortization	3700000	usd
CY2024Q1	amg	Depreciation And Other Amortization DepreciationAndOtherAmortization	3000000.0	usd
CY2023Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11300000	usd
CY2024Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	23500000	usd
CY2023Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	58600000	usd
CY2024Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	117500000	usd
CY2023Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	305500000	usd
CY2024Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	211500000	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	25300000	usd
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	38800000	usd
CY2023Q1	amg	Realized And Unrealized Investment Gains Losses RealizedAndUnrealizedInvestmentGainsLosses	32900000	usd
CY2024Q1	amg	Realized And Unrealized Investment Gains Losses RealizedAndUnrealizedInvestmentGainsLosses	9100000	usd
CY2023Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-8000000.0	usd
CY2024Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	3300000	usd
CY2023Q1	amg	Purchases Of Securities By Affiliate Sponsored Consolidated Products PurchasesOfSecuritiesByAffiliateSponsoredConsolidatedProducts	9800000	usd
CY2024Q1	amg	Purchases Of Securities By Affiliate Sponsored Consolidated Products PurchasesOfSecuritiesByAffiliateSponsoredConsolidatedProducts	12700000	usd
CY2023Q1	amg	Sale Of Securities By Affiliate Sponsored Consolidated Products SaleOfSecuritiesByAffiliateSponsoredConsolidatedProducts	12400000	usd
CY2024Q1	amg	Sale Of Securities By Affiliate Sponsored Consolidated Products SaleOfSecuritiesByAffiliateSponsoredConsolidatedProducts	21500000	usd
CY2023Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	92200000	usd
CY2024Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	159500000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2900000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-6100000	usd
CY2023Q1	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-141800000	usd
CY2024Q1	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	900000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	234800000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	209200000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1900000	usd
CY2024Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1000000.0	usd
CY2023Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	109800000	usd
CY2024Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	359100000	usd
CY2023Q1	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	399700000	usd
CY2024Q1	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	434600000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	288000000.0	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	74500000	usd
CY2023Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	25000000.0	usd
CY2024Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	450000000.0	usd
CY2023Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	25000000.0	usd
CY2024Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	450000000.0	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2024Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	152500000	usd
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	400000	usd
CY2024Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	300000	usd
CY2023Q1	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	79500000	usd
CY2024Q1	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	81800000	usd
CY2023Q1	amg	Proceeds From Payments For Affiliate Equity Issuances And Repurchases ProceedsFromPaymentsForAffiliateEquityIssuancesAndRepurchases	7300000	usd
CY2024Q1	amg	Proceeds From Payments For Affiliate Equity Issuances And Repurchases ProceedsFromPaymentsForAffiliateEquityIssuancesAndRepurchases	-33000000.0	usd
CY2023Q1	amg	Subscriptions Redemptions To Consolidated Affiliate Sponsored Investment Products SubscriptionsRedemptionsToConsolidatedAffiliateSponsoredInvestmentProducts	-2700000	usd
CY2024Q1	amg	Subscriptions Redemptions To Consolidated Affiliate Sponsored Investment Products SubscriptionsRedemptionsToConsolidatedAffiliateSponsoredInvestmentProducts	-8600000	usd
CY2023Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-41600000	usd
CY2024Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-26100000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-116900000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-302300000	usd
CY2023Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2600000	usd
CY2024Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1600000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	408500000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-20200000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	429200000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	813600000	usd
CY2023Q1	amg	Reduction To Cash Due To Deconsolidation Of Affiliate Sponsored Investment Products ReductionToCashDueToDeconsolidationOfAffiliateSponsoredInvestmentProducts	4900000	usd
CY2024Q1	amg	Reduction To Cash Due To Deconsolidation Of Affiliate Sponsored Investment Products ReductionToCashDueToDeconsolidationOfAffiliateSponsoredInvestmentProducts	0	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	832800000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	793400000	usd
CY2024Q1	us-gaap	Use Of Estimates UseOfEstimates	<span style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; left: 67.5pt; position: var(--position); text-decoration: none; white-space: pre;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions <span style="display: inline-block; height: 6.93pt;"></span></span>that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates.
CY2023Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	35300000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	30600000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	2600000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	3600000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Loss EquitySecuritiesFvNiUnrealizedLoss	0.0	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Unrealized Loss EquitySecuritiesFvNiUnrealizedLoss	100000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	37900000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	34100000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	1400000	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	1400000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	405400000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	296500000	usd
CY2023Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	17900000	usd
CY2024Q1	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	18500000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0.0	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0.0	usd
CY2023Q4	amg	Debt Securities Trading Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesTradingAccumulatedGrossUnrealizedGainBeforeTax	0	usd
CY2024Q1	amg	Debt Securities Trading Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesTradingAccumulatedGrossUnrealizedGainBeforeTax	0	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	100000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	usd
CY2023Q4	amg	Debt Securities Trading Accumulated Gross Unrealized Loss Before Tax DebtSecuritiesTradingAccumulatedGrossUnrealizedLossBeforeTax	100000	usd
CY2024Q1	amg	Debt Securities Trading Accumulated Gross Unrealized Loss Before Tax DebtSecuritiesTradingAccumulatedGrossUnrealizedLossBeforeTax	200000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	405300000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	296500000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	17800000	usd
CY2024Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	18300000	usd
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	101700000	usd
CY2024Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	425200000	usd
CY2023Q1	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	-100000	usd
CY2024Q1	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	800000	usd
CY2023Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	187200000	usd
CY2024Q1	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	195300000	usd
CY2024Q1	amg	Fair Value Investments Entities That Calculate Na Vs Life Of Fund FairValueInvestmentsEntitiesThatCalculateNAVsLifeOfFund	P15Y
CY2023Q4	amg	Equity Securities Without Readily Determinable Fair Value Cost EquitySecuritiesWithoutReadilyDeterminableFairValueCost	8500000	usd
CY2024Q1	amg	Equity Securities Without Readily Determinable Fair Value Cost EquitySecuritiesWithoutReadilyDeterminableFairValueCost	8500000	usd
CY2023Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Cumulative Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount	41900000	usd
CY2024Q1	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Cumulative Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount	41900000	usd
CY2023Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	50400000	usd
CY2024Q1	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	50400000	usd
CY2024Q1	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	0	usd
CY2022Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	50400000	usd
CY2022Q4	us-gaap	Other Investments OtherInvestments	421600000	usd
CY2023Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	50400000	usd
CY2023Q4	us-gaap	Other Investments OtherInvestments	480900000	usd
CY2023Q1	amg	Equity Securities Without Readily Determinable Fair Value Purchases And Commitments EquitySecuritiesWithoutReadilyDeterminableFairValuePurchasesAndCommitments	0	usd
CY2023Q1	amg	Other Investments Purchases OtherInvestmentsPurchases	9800000	usd
CY2024Q1	amg	Equity Securities Without Readily Determinable Fair Value Purchases And Commitments EquitySecuritiesWithoutReadilyDeterminableFairValuePurchasesAndCommitments	0	usd
CY2024Q1	amg	Other Investments Purchases OtherInvestmentsPurchases	46800000	usd
CY2023Q1	amg	Equity Securities Without Readily Determinable Fair Value Sales And Distributions EquitySecuritiesWithoutReadilyDeterminableFairValueSalesAndDistributions	0	usd
CY2023Q1	amg	Other Investments Sales OtherInvestmentsSales	11500000	usd
CY2024Q1	amg	Equity Securities Without Readily Determinable Fair Value Sales And Distributions EquitySecuritiesWithoutReadilyDeterminableFairValueSalesAndDistributions	0	usd
CY2024Q1	amg	Other Investments Sales OtherInvestmentsSales	9000000.0	usd
CY2023Q1	amg	Equity Securities Without Readily Determinable Fair Value Net Gain Loss EquitySecuritiesWithoutReadilyDeterminableFairValueNetGainLoss	0	usd
CY2023Q1	amg	Other Investments Gain Loss Net OtherInvestmentsGainLossNet	6100000	usd
CY2024Q1	amg	Equity Securities Without Readily Determinable Fair Value Net Gain Loss EquitySecuritiesWithoutReadilyDeterminableFairValueNetGainLoss	0	usd
CY2024Q1	amg	Other Investments Gain Loss Net OtherInvestmentsGainLossNet	4200000	usd
CY2023Q1	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	50400000	usd
CY2023Q1	us-gaap	Other Investments OtherInvestments	426000000.0	usd
CY2024Q1	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	50400000	usd
CY2024Q1	us-gaap	Other Investments OtherInvestments	522900000	usd
CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	2288500000	usd
CY2024Q1	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	2214100000	usd
CY2023Q4	us-gaap	Equity Method Investments EquityMethodInvestments	90300000	usd
CY2024Q1	us-gaap	Equity Method Investments EquityMethodInvestments	93600000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	2537500000	usd
CY2024Q1	us-gaap	Long Term Debt LongTermDebt	2524900000	usd
CY2024Q1	amg	Investment Commitment Amount InvestmentCommitmentAmount	195300000	usd
CY2024Q1	amg	Deferred Payment Obligations Liability DeferredPaymentObligationsLiability	43300000	usd
CY2024Q1	amg	Deferred Payment Obligations Liability To Be Paid Year One DeferredPaymentObligationsLiabilityToBePaidYearOne	21700000	usd
CY2024Q1	amg	Deferred Payment Obligations Liability To Be Paid Year Two DeferredPaymentObligationsLiabilityToBePaidYearTwo	21600000	usd
CY2024Q1	amg	Contingent Consideration Liability ContingentConsiderationLiability	9600000	usd
CY2024Q1	amg	Contingent Consideration Liability To Be Paid Year One ContingentConsiderationLiabilityToBePaidYearOne	3100000	usd
CY2024Q1	amg	Contingent Consideration Liability To Be Paid Year Two ContingentConsiderationLiabilityToBePaidYearTwo	6500000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	2523600000	usd
CY2024Q1	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-6100000	usd
CY2024Q1	us-gaap	Goodwill Goodwill	2517500000	usd
CY2024Q1	amg	Impairment Of Intangible Asset Indefinite Lived Excluding Goodwill Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag ImpairmentOfIntangibleAssetIndefiniteLivedExcludingGoodwillStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag	Indefinite-lived
CY2023Q4	amg	Number Of Affiliates Equity Method Investment NumberOfAffiliatesEquityMethodInvestment	22	affiliate
CY2024Q1	amg	Number Of Affiliates Equity Method Investment NumberOfAffiliatesEquityMethodInvestment	22	affiliate
CY2024Q1	amg	Common Stock Voting Rights Percent CommonStockVotingRightsPercent	0.05
CY2023Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	14700000	usd
CY2024Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	21100000	usd
CY2023Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1700000	usd
CY2024Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2300000	usd
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	54400000	usd
CY2024Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	70200000	usd
CY2024Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3200000	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	76.74
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2024Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0.0	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	86.65
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0.0	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	152.36
CY2024Q1	amg	Share Based Compensation Arrangement By Sharebased Payment Award Options Period Increase Decrease Performance Condition Changes ShareBasedCompensationArrangementBySharebasedPaymentAwardOptionsPeriodIncreaseDecreasePerformanceConditionChanges	0.0	shares
CY2024Q1	amg	Share Based Compensation Arrangements By Share Based Payment Award Options Performance Condition Changes Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsPerformanceConditionChangesWeightedAverageExercisePrice	129.17
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3200000	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	76.77
CY2024Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y6M
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0.0	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	123.38
CY2024Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y8M12D
CY2024Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	0	usd
CY2023Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	0	usd
CY2023Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	393400000	usd
CY2024Q1	amg	Noncontrolling Interest Increase Decrease Attributable To Consolidated Partnerships NoncontrollingInterestIncreaseDecreaseAttributableToConsolidatedPartnerships	-8200000	usd
CY2024Q1	amg	Noncontrolling Interest Decrease From Transfers To Other Liabilities NoncontrollingInterestDecreaseFromTransfersToOtherLiabilities	10300000	usd
CY2024Q1	amg	Redeemable Noncontrolling Interest Equity Change In Redemption Value RedeemableNoncontrollingInterestEquityChangeInRedemptionValue	-18100000	usd
CY2024Q1	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	393000000.0	usd
CY2023Q1	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	79500000	usd
CY2024Q1	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	81800000	usd
CY2023Q1	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	5000000	usd
CY2024Q1	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	39300000	usd
CY2023Q1	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	12300000	usd
CY2024Q1	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	6300000	usd
CY2023Q1	amg	Affiliate Equity Compensation Expense Including Portion Attributable To Noncontrolling Interest AffiliateEquityCompensationExpenseIncludingPortionAttributableToNoncontrollingInterest	10600000	usd
CY2024Q1	amg	Affiliate Equity Compensation Expense Including Portion Attributable To Noncontrolling Interest AffiliateEquityCompensationExpenseIncludingPortionAttributableToNoncontrollingInterest	17700000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	134500000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	149800000	usd
CY2023Q1	amg	Adjustments To Additional Paid In Capital Increase Decrease In Carrying Amount Of Redeemable Noncontrolling Interests AdjustmentsToAdditionalPaidInCapitalIncreaseDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests	-3600000	usd
CY2024Q1	amg	Adjustments To Additional Paid In Capital Increase Decrease In Carrying Amount Of Redeemable Noncontrolling Interests AdjustmentsToAdditionalPaidInCapitalIncreaseDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests	-1800000	usd
CY2023Q1	amg	Adjustments To Additional Paid In Capital Decrease In Carrying Amount Of Redeemable Noncontrolling Interests AdjustmentsToAdditionalPaidInCapitalDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests	27500000	usd
CY2024Q1	amg	Adjustments To Additional Paid In Capital Decrease In Carrying Amount Of Redeemable Noncontrolling Interests AdjustmentsToAdditionalPaidInCapitalDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests	7200000	usd
CY2023Q1	amg	Increase Decrease In Equity Due To Profit Loss And Net Transfers With Noncontrolling Interests IncreaseDecreaseInEquityDueToProfitLossAndNetTransfersWithNoncontrollingInterests	103400000	usd
CY2024Q1	amg	Increase Decrease In Equity Due To Profit Loss And Net Transfers With Noncontrolling Interests IncreaseDecreaseInEquityDueToProfitLossAndNetTransfersWithNoncontrollingInterests	140800000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45000000.0	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	55400000	usd
CY2023Q1	amg	Deferred Income Tax Expense Related To Intangibles DeferredIncomeTaxExpenseRelatedToIntangibles	14800000	usd
CY2024Q1	amg	Deferred Income Tax Expense Related To Intangibles DeferredIncomeTaxExpenseRelatedToIntangibles	17100000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	134500000	usd
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	149800000	usd
CY2023Q1	amg	Net Income Loss Other Noncontrolling Interests Redeemable NetIncomeLossOtherNoncontrollingInterestsRedeemable	700000	usd
CY2024Q1	amg	Net Income Loss Other Noncontrolling Interests Redeemable NetIncomeLossOtherNoncontrollingInterestsRedeemable	13000000.0	usd
CY2023Q1	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	3400000	usd
CY2024Q1	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	3400000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	138600000	usd
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	166200000	usd
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	35900000	shares
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32800000	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000.0	shares
CY2024Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000.0	shares
CY2023Q1	amg	Settlement Of Redeemable Non Controlling Interests Shares Issued SettlementOfRedeemableNonControllingInterestsSharesIssued	300000	shares
CY2024Q1	amg	Settlement Of Redeemable Non Controlling Interests Shares Issued SettlementOfRedeemableNonControllingInterestsSharesIssued	3600000	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	1700000	shares
CY2024Q1	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	1700000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39900000	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40100000	shares
CY2024Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1000000	shares
CY2024Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	155.60
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	30200000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2800000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27400000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	10100000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	3800000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6300000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	6200000	usd
CY2024Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-100000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6300000	usd

Files In Submission

Name	View Source	Status
0001004434-24-000030-index-headers.html	Edgar Link	pending
0001004434-24-000030-index.html	Edgar Link	pending
0001004434-24-000030.txt	Edgar Link	pending
0001004434-24-000030-xbrl.zip	Edgar Link	pending
amg-20240331.htm	Edgar Link	pending
amg-20240331.xsd	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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amg-20240331_def.xml	Edgar Link	unprocessable
amg-20240331_lab.xml	Edgar Link	unprocessable
amg-20240331_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
amg-20240331_htm.xml	Edgar Link	completed
amg-20240331_cal.xml	Edgar Link	unprocessable
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$AMG
AFFILIATED MANAGERS GROUP, INC. Stock $amg

2024 Q2 Form 10-Q Financial Statement

#000100443424000030 Filed on May 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMG AFFILIATED MANAGERS GROUP, INC. Stock $amg

2024 Q2 Form 10-Q Financial Statement

#000100443424000030 Filed on May 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMG
AFFILIATED MANAGERS GROUP, INC. Stock $amg