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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%