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Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Thousands, shares in Millions, ft² in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) ft² property state note_receivable variable_interest_entity financing_receivable $ / shares shares | Sep. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) loan | Sep. 30, 2024 USD ($) ft² property state note_receivable variable_interest_entity financing_receivable joint_venture loan $ / shares shares | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) financing_receivable $ / shares | Jun. 30, 2024 USD ($) financing_receivable | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jul. 20, 2022 $ / shares
Business Overview: |  |  |  |  |  |  |  |  |  |
Gross investment amount, total | $ 12,400,000 |  |  | $ 12,400,000 |  |  |  |  |  |
Number of real estate properties | property | 605 |  |  | 605 |  |  |  |  |  |
Number of properties held in unconsolidated joint ventures | property | 55 |  |  | 55 |  |  |  |  |  |
Number of states that the company owns real estate in, whole units | state | 34 |  |  | 34 |  |  |  |  |  |
Approximate square feet invested in by company | ft² | 35.4 |  |  | 35.4 |  |  |  |  |  |
Nationwide portfolio (percent) | 92.00% |  |  | 92.00% |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.01 |  |  | $ 0.01 |  | $ 0.01 |  |  |  |
Principles of Consolidation: |  |  |  |  |  |  |  |  |  |
Equity ownership for consolidation (percent) | 100.00% |  |  | 100.00% |  |  |  |  |  |
Number of variable interest entities | variable_interest_entity | 4 |  |  | 4 |  |  |  |  |  |
Number of variable interest entities held for sale | variable_interest_entity | 1 |  |  | 1 |  |  |  |  |  |
Redeemable Non-Controlling Interests: |  |  |  |  |  |  |  |  |  |
Redeemable non-controlling interests | $ 3,875 | $ 3,195 |  | $ 3,875 | $ 3,195 | $ 3,868 | $ 3,875 | $ 2,487 | $ 2,014 |
Asset Impairment: |  |  |  |  |  |  |  |  |  |
Impairment of real estate assets | 37,600 |  |  | 174,500 |  |  |  |  |  |
Goodwill Impairment |  |  |  |  |  |  |  |  |  |
Impairment of goodwill | 0 | 0 |  | 250,530 | 0 |  |  |  |  |
Real Estate Notes Receivable: |  |  |  |  |  |  |  |  |  |
Investment in financing receivable, net | $ 121,700 |  |  | $ 121,700 |  |  |  |  |  |
Allowance for Credit Losses, Interest Income, Income from Real Estate Notes Receivable: |  |  |  |  |  |  |  |  |  |
Number of mezzanine loans | loan |  |  | 2 | 2 |  |  |  |  |  |
Credit loss reserves |  |  | $ 5,200 | $ 57,963 |  | $ 5,196 |  |  |  |
Number of mortgage loans | loan |  |  |  | 1 |  |  |  |  |  |
Number of recognized lease financial receivables | financing_receivable | 2 |  |  | 2 |  |  |  |  |  |
Income from financing receivables | $ 2,100 | 2,000 |  | $ 6,300 | 6,200 |  |  |  |  |
Number of real estate notes receivable | financing_receivable |  |  |  |  |  | 2 | 1 |  |  |
Financing receivable, nonaccrual |  |  |  |  |  |  | $ 20,500 |  |  |
Mezzanine loans |  |  |  |  |  |  |  |  |  |
Allowance for Credit Losses, Interest Income, Income from Real Estate Notes Receivable: |  |  |  |  |  |  |  |  |  |
Credit loss reserves |  |  |  | 46,800 |  |  |  |  |  |
Mortgage Receivable |  |  |  |  |  |  |  |  |  |
Allowance for Credit Losses, Interest Income, Income from Real Estate Notes Receivable: |  |  |  |  |  |  |  |  |  |
Credit loss reserves |  |  |  | $ 11,200 |  |  |  |  |  |
Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |
Asset Impairment: |  |  |  |  |  |  |  |  |  |
Number of properties measured at fair value | property | 11 |  |  | 11 |  |  |  |  |  |
Properties measured at fair value | $ 52,600 |  |  | $ 52,600 |  |  |  |  |  |
One |  |  |  |  |  |  |  |  |  |
Goodwill Impairment |  |  |  |  |  |  |  |  |  |
Reporting unit, carrying value | 12,000,000 |  |  | 12,000,000 |  |  |  |  |  |
Notes Receivable |  |  |  |  |  |  |  |  |  |
Allowance for Credit Losses, Interest Income, Income from Real Estate Notes Receivable: |  |  |  |  |  |  |  |  |  |
Interest income | $ 1,800 | $ 2,300 |  | $ 6,000 | $ 6,500 |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |  |
Principles of Consolidation: |  |  |  |  |  |  |  |  |  |
Number of variable interest entities | variable_interest_entity | 3 |  |  | 3 |  |  |  |  |  |
Number of notes receivable | note_receivable | 2 |  |  | 2 |  |  |  |  |  |
Number of joint ventures | joint_venture |  |  |  | 1 |  |  |  |  |  |
HealthCare Realty Trust Incorporated |  |  |  |  |  |  |  |  |  |
Business Overview: |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.01
HealthCare Realty Trust Incorporated | Other Investors |  |  |  |  |  |  |  |  |  |
Business Overview: |  |  |  |  |  |  |  |  |  |
Subsidiary, ownership percentage, noncontrolling owner | 1.50% |  |  | 1.50% |  |  |  |  |  |
Non-Controlling Interest Holders | Healthcare Trust of America Holdings L P |  |  |  |  |  |  |  |  |  |
Principles of Consolidation: |  |  |  |  |  |  |  |  |  |
Limited partner's capital, units outstanding (in shares) | shares | 5.3 |  |  | 5.3 |  |  |  |  |  |
Healthcare Trust of America Holdings L P |  |  |  |  |  |  |  |  |  |
Business Overview: |  |  |  |  |  |  |  |  |  |
Equity interest owned (percent) | 98.50% |  |  | 98.50% |  |  |  |  |  |
Property Entities Not Determined to be VIEs |  |  |  |  |  |  |  |  |  |
Business Overview: |  |  |  |  |  |  |  |  |  |
Equity interest owned (percent) | 100.00% |  |  | 100.00% |  |  |  |  |  |
Real Estate Properties Held in Joint Ventures |  |  |  |  |  |  |  |  |  |
Business Overview: |  |  |  |  |  |  |  |  |  |
Joint venture ownership (percent) | 33.00% |  |  | 33.00% |  |  |  |  |  |

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