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Temporary Equity, Including Noncontrolling Interest Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Equity securities Common Stock [Member] Credit Agreement Credit Agreement [Text Block] Credit Agreement Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] The Cohen & Steers SICAV Global Real Estate Fund [Member] SICAV GLI and ETFs [Member] SICAV GLI and ETFs Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Derivative Contract Type [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities, redeemable noncontrolling interests and stockholders’ equity Liabilities and Equity Goodwill and intangible assets—net Intangible Asset, Including Goodwill, after Accumulated Amortization Due to brokers Increase (Decrease) in Payable to Broker-Dealer and Clearing Organization Employee Stock Option Share-Based Payment Arrangement, Option [Member] Purchases/contributions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Equity, Attributable to Noncontrolling Interest Equity, Attributable to Noncontrolling Interest Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Trading Debt Securities, Trading Tabular List, Table Tabular List [Table Text Block] Terminal Capitalization Rate Measurement Input, Terminal Capitalization Rate [Member] Measurement Input, Terminal Capitalization Rate Additional paid-in capital Additional Paid in Capital Foreign currency gain (loss)—net Other Nonoperating Income (Expense) Name Awards Close in Time to MNPI Disclosures, Individual Name Purchases of investments Payments to Acquire Investments Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] General and administrative General and Administrative Expense Derivatives Derivatives and Fair Value [Text Block] Receivables Receivables, Net, Current Adjustment to Compensation: Adjustment to Compensation [Axis] Due from brokers Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization Asia Pacific excluding Japan Asia, Excluding Japan [Member] Asia, Excluding Japan [Member] Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Long-term purchase commitment Other Commitment Credit Facility [Axis] Credit Facility [Axis] Cohen & Steers Short Duration Preferred and Income Active ETF Cohen & Steers Short Duration Preferred and Income Active ETF [Member] Cohen & Steers Short Duration Preferred and Income Active ETF Institutional accounts Institutional Accounts [Member] Institutional Accounts [Member] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Payables Accounts Payable Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Payables due to company-sponsored mutual funds Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Investment advisory and administrative fees Revenue From Related Parties, Investment Advisory and Administrative Fees Revenue from Related Parties, Investment advisory and administrative fees Dividends [Axis] Dividends [Axis] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation, Depletion and Amortization Realized and unrealized gains (losses) Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Total Return Swap Total Return Swap [Member] Distribution and service fees Revenue From Related Parties, Distribution and Service Fees Revenue From Related Parties, Distribution and Service Fees Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent Derivatives - liabilities: Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability North America North America [Member] Provision for income taxes Income Tax Expense (Benefit) Foreign currency (gain) loss Gain (Loss), Foreign Currency Transaction, before Tax Award Timing Method Award Timing Method [Text Block] Consolidation of Investment Vehicles Consolidation, Policy [Policy Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Net income attributable to common stockholders Net income attributable to common stockholders Net income (loss) Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Japan JAPAN Revenue: Revenues [Abstract] Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]