Equity and Redeemable Noncontrolling Interests - Narrative (Details)
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3 Months Ended |
9 Months Ended |
12 Months Ended |
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Oct. 01, 2026
$ / shares
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Aug. 12, 2026
USD ($)
shares
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Jun. 04, 2026
USD ($)
shares
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Mar. 23, 2026
USD ($)
shares
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Sep. 30, 2026
USD ($)
unit
entity
$ / shares
shares
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Mar. 31, 2026
USD ($)
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Sep. 30, 2025
USD ($)
$ / shares
shares
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Sep. 30, 2026
USD ($)
unit
entity
plan_participant
$ / shares
shares
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Sep. 30, 2025
USD ($)
unit
$ / shares
shares
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Dec. 31, 2025
USD ($)
unit
entity
shares
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Jul. 30, 2026
USD ($)
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Jul. 24, 2024
USD ($)
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| Noncontrolling Interest [Line Items] |
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| Dividends declared per common share (in dollars per share) | $ / shares |
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$ 0.305
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$ 0.305
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$ 0.915
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$ 0.915
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| Dividends paid per common share (in dollars per share) | $ / shares |
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$ 0.305
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$ 0.305
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$ 0.915
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$ 0.915
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| Issuance of common stock, net |
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$ 248,000
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$ 383,000
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$ 1,391,000
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$ 936,000
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| Number of plan participants | plan_participant |
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1
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| Noncontrolling interests, currently exercisable put options |
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$ 14,000,000
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$ 14,000,000
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| Noncontrolling interests, exercisable upon completion of development projects |
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$ 14,000,000
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$ 13,000,000
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| Units outstanding (in units) | unit |
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6,000,000
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6,000,000
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4,000,000
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| Issuance of OP units criteria redemption (in units) | unit |
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509,000
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509,000
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275,000
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| Value of units meeting criteria for redemption |
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$ 10,000,000
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$ 10,000,000
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$ 4,000,000
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| DownREIT units outstanding (in shares) | shares |
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11,000,000
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11,000,000
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11,000,000
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| Number of DownREIT LLCs | entity |
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8
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8
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8
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| Non-managing member unitholders |
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$ 357,906,000
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$ 357,906,000
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$ 347,321,000
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| Down REIT units, market value |
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$ 266,000,000
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$ 266,000,000
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$ 215,000,000
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| Down REIT |
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| Noncontrolling Interest [Line Items] |
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| Common stock issuable (in shares) | shares |
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13,000,000
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13,000,000
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13,000,000
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| Non-managing member unitholders |
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$ 305,000,000
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$ 305,000,000
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$ 307,000,000
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| Healthpeak OP | Total Noncontrolling Interests |
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| Noncontrolling Interest [Line Items] |
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| Issuance of OP units (in units) | unit |
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2,000,000
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2,000,000
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| Common stock, unit redemption share amount | shares |
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1
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| Janus Living OP | Total Noncontrolling Interests |
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| Noncontrolling Interest [Line Items] |
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| Issuance of OP units (in units) | unit |
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392,000
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| Common stock, unit redemption share amount | shares |
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1
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| Issuance of OP units criteria redemption (in units) | unit |
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0
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0
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| Value of units meeting criteria for redemption |
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$ 0
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$ 0
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| Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Payments of stock issuance costs |
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$ 8,000,000
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| Public Investors | Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Ownership interest (in percent) |
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30.80%
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30.80%
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| Gateway Crossing JV |
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| Noncontrolling Interest [Line Items] |
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| Noncontrolling interests redeemable |
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$ 132,000,000
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| Ownership (in percent) |
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50.00%
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50.00%
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| Joint venture acquired |
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$ 132,000,000
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| 2024 Share Repurchase Program |
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| Noncontrolling Interest [Line Items] |
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| Stock repurchase program, authorized amount |
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$ 500,000,000
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| Common stock repurchased (in shares) | shares |
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5,950,000
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5,090,000.00
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| Average cost per share (in dollars per share) | $ / shares |
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$ 16.81
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$ 18.50
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| Stock repurchase program, total value |
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$ 100,000,000
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$ 94,000,000
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| 2026 Share Repurchase Program |
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| Noncontrolling Interest [Line Items] |
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| Stock repurchase program, authorized amount |
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$ 500,000,000
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| Common stock repurchased (in shares) | shares |
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0
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0
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0
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0
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| Stock repurchase program, remaining authorized repurchase amount |
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$ 500,000,000
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$ 500,000,000
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| Class A-1 | Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Shares issued (in shares) | shares |
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138,816,246
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| Payments of stock issuance costs |
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2,000,000
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1,000,000
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| At-The-Market Program |
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| Noncontrolling Interest [Line Items] |
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| Aggregate amount authorized |
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1,500,000,000
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| Issuance of common stock, net |
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0
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$ 0
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$ 0
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$ 0
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| At-The-Market Program | Minimum |
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| Noncontrolling Interest [Line Items] |
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| Option indexed to issuers equity, term (in years) |
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1 year
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| At-The-Market Program | Maximum |
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| Noncontrolling Interest [Line Items] |
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| Option indexed to issuers equity, term (in years) |
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2 years
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| 2023 At-The-Market Program |
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| Noncontrolling Interest [Line Items] |
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| Aggregate amount remaining |
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$ 1,500,000,000
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| ATM Direct Issuances | Common Stock |
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| Noncontrolling Interest [Line Items] |
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| Issuance of common stock, net |
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$ 0
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$ 0
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$ 0
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$ 0
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| IPO | Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Proceeds from issuance of offering |
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$ 966,000,000
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| Payments of stock issuance costs |
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$ 65,000,000
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| IPO | Class A-1 | Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Shares issued (in shares) | shares |
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48,300,000
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| Follow-On Offering | Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Payments of stock issuance costs |
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$ 19,000,000
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$ 28,000,000
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| Proceeds from issuance of common stock |
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$ 534,000,000
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$ 719,000,000
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| Follow-On Offering | Class A-1 | Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Shares issued (in shares) | shares |
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18,400,000
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25,000,000
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| Over-Allotment Option | Class A-1 | Janus Living, Inc |
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| Noncontrolling Interest [Line Items] |
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| Shares issued (in shares) | shares |
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3,750,000
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| Sale of stock, period of duration for underwriters |
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30 days
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| Subsequent Event |
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| Noncontrolling Interest [Line Items] |
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| Dividends declared per common share (in dollars per share) | $ / shares |
$ 0.10167
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