Document and Entity Information Document Type Entity Registrant Name Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period Entity Central Index Key Amendment Flag Statement of Financial Position [Abstract] Balance Sheet: Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A-1 Common Stock Class A-1 Common Stock [Member] Class A-1 Shares Class A-2 Common Stock Class A-2 Common Stock [Member] Class A-2 Shares Statement [Line Items] Statement [Line Items] COMBINED STATEMENTS OF OPERATIONS Assets [Abstract] ASSETS ASSETS Real Estate Investment Property, Net [Abstract] Real estate: Investment Building and Building Improvements Buildings and improvements Development in Process Construction in progress Land and Land Improvements Land and improvements Real Estate Investment Property, Accumulated Depreciation Accumulated depreciation Real Estate Investment Property, Net Net real estate Equity Method Investments Investment in unconsolidated joint venture Ending balance Beginning balance Equity method investment Carrying value of the JV Accounts Receivable, after Allowance for Credit Loss Closing balance Opening balance Accounts receivable, net of allowance of $2,018 and $2,243 Accounts receivable, net of allowance of $3,480 and $2,018 Cash and Cash Equivalent Cash and cash equivalents Restricted Cash and Cash Equivalent Restricted cash Intangible Assets, Net (Excluding Goodwill) Intangible assets Deferred Income Tax Assets, Net Deferred tax assets Goodwill Goodwill Other Assets Other assets Other assets Assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND EQUITY LIABILITIES AND PARENT'S NET INVESTMENT Secured Debt Mortgage debt Total Accounts Payable and Accrued Liabilities Accounts payable, accrued liabilities, and other liabilities Accounts payable, accrued liabilities, and other liabilities Contract with Customer, Liability Deferred revenue Deferred revenue Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies (Note 10) Net Parent Investment Net Parent Investment Parent's net investment Common Stock, Value, Issued Common stock, value Additional Paid in Capital Additional paid-in capital Accumulated Distributions in Excess of Net Income Cumulative dividends in excess of earnings Equity, Attributable to Parent Ending balance Beginning balance Total stockholders' equity Noncontrolling Interest in Operating Partnerships Common units of Janus OP, LLC, held by Healthpeak Properties, Inc. Other Noncontrolling Interests Other noncontrolling interests Equity, Attributable to Noncontrolling Interest Total noncontrolling interests Equity, Including Portion Attributable to Noncontrolling Interest Ending balance Beginning balance Total equity Liabilities and Equity Total liabilities and equity Accounts Receivable, Allowance for Credit Loss Closing balance Opening balance Allowance for accounts receivable Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, authorized (in shares) Common Stock, Shares, Issued Common stock, issued (in shares) Common Stock, Shares, Outstanding Ending balance (in shares) Beginning balance (in shares) Common stock, outstanding (in shares) Income Statement [Abstract] Income Statement: Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Resident Fees and Services Resident Fees and Services [Member] Resident Fees and Services Resident fees and services Related and Nonrelated Parties [Axis] Related Party [Axis] Related and Nonrelated Parties [Domain] Related Party [Domain] Nonrelated Party [Member] Nonrelated Party Related Party [Member] Related Party Related Party Management Fee Revenues [Abstract] Revenues: Revenue from Contract with Customer, Excluding Assessed Tax Total revenues Resident fees and services Costs and Expenses [Abstract] Costs and expenses: Operating Costs and Expenses Operating Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation and amortization Depreciation and amortization of real estate and in-place resident contract intangibles Depreciation and amortization General and Administrative Expense General and administrative General and administrative General and administrative Interest Expense, Operating Interest expense Interest expense Interest expense Business Combination, Acquisition-Related Cost, Expense Transaction costs Transaction costs Transaction costs Costs and Expenses Total costs and expenses Nonoperating Income (Expense) [Abstract] Other income (expense): Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain Loss (gain) upon change of control, net Loss (gain) upon change of control, net Gain (loss) upon change of control, net Gain (Loss) on Extinguishment of Debt Loss on debt extinguishments Loss (gain) on debt extinguishments Gain (loss) on debt extinguishments Other Nonoperating Income (Expense) Other income (expense), net Nonoperating Income (Expense) Total other income (expense), net Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income (loss) before income taxes and equity income (loss) from unconsolidated joint venture Income (loss) before income taxes and equity income (loss) from unconsolidated joint venture Income Tax Expense (Benefit) Income tax benefit (expense) Income tax benefit (expense) Total income tax benefit (expense) Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Equity income (loss) from unconsolidated joint venture Equity income (loss) from unconsolidated joint venture Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net income (loss) Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Noncontrolling interests' share in earnings Net Income (Loss), Pre-IPO Net Income (Loss), Pre-IPO Net (income) loss - pre-IPO Pre-IPO net income (loss) Net Income (Loss) Available to Common Stockholders, Basic Net income (loss) attributable to Class A-1 common stock Net income (loss) attributable to Class A-1 common stock Earnings Per Share [Abstract] Earnings per share of Class A-1 common stock: Earnings Per Share, Basic Basic (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average Class A-1 common stock outstanding: Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Basic weighted average Class A-1 common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Diluted weighted average Class A-1 common stock outstanding (in shares) Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Parent [Member] Total Stockholders' Equity Net Parent Investment Net Parent Investment [Member] Parent's Net Investment Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Additional Paid-In Capital Accumulated Distributions in Excess of Net Income [Member] Cumulative Dividends In Excess Of Earnings Noncontrolling Interest, Operating Partnership Noncontrolling Interest, Operating Partnership [Member] Common Units of Janus OP, LLC, held by Healthpeak Properties, Inc. Noncontrolling Interest, Other Noncontrolling Interest, Other [Member] Other Noncontrolling Interests Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity COMBINED STATEMENTS OF PARENT'S NET INVESTMENT Stockholders' Equity, Contributions From Parent Stockholders' Equity, Contributions From Parent Net contributions from Parent Stock Issued During Period, Value, New Issues Issuance of common stock in connection with initial public offering, net of underwriting fees and offering costs Stock Issued During Period, Shares, New Issues Issuance of common stock, net (in shares) Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and offering costs (in shares) Noncontrolling Interest, Increase from Subsidiary Equity Issuance Issuance of noncontrolling interests in connection with initial public offering APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Stock-based compensation Noncontrolling Interest, Increase from Business Combination Acquisition of noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions to noncontrolling interests Noncontrolling Interest, Other Adjustments Noncontrolling Interest, Other Adjustments Adjustments to noncontrolling interests Stockholders' Equity, Distributions To Parent Stockholders' Equity, Distributions To Parent Net distributions to Parent Net distributions to Parent Statement of Cash Flows [Abstract] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Share-Based Payment Arrangement, Noncash Expense Stock-based compensation amortization expense Stock-Based Compensation Issued as Part of Initial Public Offering Stock-Based Compensation Issued as Part of Initial Public Offering Stock-based compensation issued as part of initial public offering Amortization of Debt Issuance Costs and Discounts Amortization of deferred financing costs and debt discounts (premiums) Amortization Of Nonrefundable Entrance Fees Amortization Of Nonrefundable Entrance Fees Amortization of non-refundable entrance fees Amortization Income Loss From Equity Method Investments, Including Discontinued Operations Income Loss From Equity Method Investments, Including Discontinued Operations Equity loss (income) from unconsolidated joint venture Deferred Income Taxes and Tax Credits Deferred income tax expense (benefit) Insured Event, Gain (Loss) Casualty-related loss (recoveries), net Other Noncash Income (Expense) Other non-cash items Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in: Increase (Decrease) in Accounts Receivable and Other Operating Assets Decrease (increase) in accounts receivable and other assets, net Increase (Decrease) in Accounts Payable and Accrued Liabilities Increase (decrease) in accounts payable, accrued liabilities, and other liabilities Increase (Decrease) in Contract with Customer, Liability Increase (decrease) in deferred revenue Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash provided by (used in) operating activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash flows from investing activities: Payments to Acquire Other Real Estate Acquisitions of real estate Payments to Acquire Businesses, Gross Joint venture buyout, net Cash paid Payments to Acquire Other Property, Plant, and Equipment Capital expenditures Capital expenditures The cash inflow from unconsolidated joint ventures in which the entity does not have sufficient US GAAP earnings (accumulated or in the current period) to distribute funds to partners, thereby constituting a return of investment. Distributions In Excess Of Earnings From Unconsolidated Joint Ventures Distributions in excess of earnings from unconsolidated joint venture Proceeds from Insurance Settlement, Investing Activities Proceeds from insurance recovery Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash provided by (used in) investing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Proceeds from Issuance Initial Public Offering Issuance of common stock in connection with initial public offering, net of underwriting fees Repayments of Secured Debt Repayments of mortgage debt Repayments of mortgage debt Payment for Debt Extinguishment or Debt Prepayment Cost Payments for debt extinguishment and deferred financing costs Payments for debt extinguishment and deferred financing costs Prepayment penalty Payments of Stock Issuance Costs Payments of offering costs Payments of offering costs Payments of offering costs Proceeds From Contribution (Payments For Distributions To) Parent Proceeds From Contribution (Payments For Distributions To) Parent Net contributions from (distributions to) Parent Net distributions to Parent Payments to Noncontrolling Interests Distributions to and purchase of noncontrolling interests Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by (used in) financing activities Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash, cash equivalents, and restricted cash, end of period Cash, cash equivalents, and restricted cash, beginning of period Organization, Consolidation and Presentation of Financial Statements [Abstract] Nature of Operations [Text Block] Business Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Real Estate [Abstract] Real Estate Disclosure [Text Block] Real Estate Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures Disclosure [Text Block] Investments in Unconsolidated Joint Ventures Investment in Unconsolidated Joint Venture Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets Disclosure [Text Block] Intangible Assets Other Assets [Abstract] Other Assets Disclosure [Text Block] Other Assets Debt Disclosure [Abstract] Debt Disclosure [Text Block] Debt Payables and Accruals [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts Payable, Accrued Liabilities, and Other Liabilities Revenue from Contract with Customer [Text Block] Deferred Revenue Revenue Recognition Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Equity [Abstract] Equity [Text Block] Equity Earnings Per Share [Text Block] Earnings Per Common Share Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] The entire disclosure for variable interest entities, including description of the terms of arrangements and categorized by: (1) VIEs consolidated because the entity is the primary beneficiary, (2) VIEs not consolidated because the entity is not the primary beneficiary, and (3) VIEs or potential VIEs that are not consolidated because necessary information is not available. Variable Interest Entities [Text Block] Variable Interest Entities Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements Revenue from Contract with Customer [Abstract] Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Segment Disclosures Supplemental Cash Flow Elements [Abstract] Cash Flow, Supplemental Disclosures [Text Block] Supplemental Cash Flow Information Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related Party Transactions Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Income Tax, Policy [Policy Text Block] Income Taxes New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Equity Method Investments [Table Text Block] Schedule of Equity Method Investments Schedule of equity method investment Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Intangible Lease Assets Schedule of intangible assets Schedule of Other Assets [Table Text Block] Schedule of Other Assets Schedule of other assets Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Schedule of Accounts Payable, Accrued Liabilities, and Other Liabilities Schedule of accounts payable, accrued liabilities, and other liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Schedule of Deferred Revenue and Entrance Fee Receivables Schedule of deferred revenue Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Computation of Basic and Diluted Earnings Per Share Schedule of Variable Interest Entities [Table Text Block] Schedule of Variable Interest Entities Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Carrying Amounts and Fair Values of Financial Instruments Schedule of carrying amounts and fair values of financial instruments either recorded or disclosed on a recurring basis Disaggregation of Revenue [Table Text Block] Schedule of disaggregation of revenue Schedule of Disaggregation of Resident Fees and Services Revenue Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of accounts receivable, net Schedule of Opening and Closing Balances of Accounts Receivable, Net Accounts Receivable, Allowance for Credit Loss [Table Text Block] Schedule of adjustments to allowances for credit losses Schedule of Adjustments to Allowances for Credit Losses Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Expenses and Net Income (Loss) Schedule of significant segment expenses and net income (loss) Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Schedule of Supplemental Cash Flow Information Schedule of supplemental cash flow information Schedule of Cash and Cash Equivalents [Table Text Block] Schedule of Cash, Cash Equivalents and Restricted Cash Schedule of cash, cash equivalents, and restricted cash Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain]