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Summary of Significant Accounting Policies (Details)
$ / shares in Units, $ in Thousands, shares in Millions, ft² in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
ft²
property
variable_interest_entity
note_receivable
financing_receivable
state
joint_venture
$ / shares
shares
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
financing_receivable
$ / shares
Dec. 31, 2022
USD ($)
Jul. 20, 2021
$ / shares
Business Overview:          
Gross investment amount, total $ 13,400,000        
Number of real estate properties | property 654        
Number of states that the company owns real estate in, whole units | state 35        
Approximate square feet invested in by company | ft² 38.4        
Nationwide portfolio (percent) 92.00%        
Common stock, par value (in dollars per share) | $ / shares $ 0.01   $ 0.01    
Number of properties held in unconsolidated joint ventures | property 33        
Principles of Consolidation:          
Equity ownership for consolidation (percent) 100.00%        
Number of variable interest entities | variable_interest_entity 4        
Redeemable Non-Controlling Interests:          
Redeemable non-controlling interests $ 3,880 $ 2,000 $ 3,868 $ 2,014  
Asset Impairment:          
Impairment of real estate assets 15,900        
Goodwill Impairment          
Impairment of goodwill 250,530 0      
Real Estate Notes Receivable:          
Investment in financing receivable, net 174,400        
Allowance for Credit Losses, Interest Income, Income from Real Estate Notes Receivable:          
Credit loss reserves $ 0 5,200 $ 5,196    
Number of recognized lease financial receivables | financing_receivable 2        
Income from financing receivables $ 2,100        
Number of real estate notes receivable | financing_receivable     2    
Financing receivable, nonaccrual     $ 48,900    
Fair Value, Inputs, Level 3          
Asset Impairment:          
Number of properties measured at fair value | property 3        
Properties measured at fair value $ 2,900        
One          
Goodwill Impairment          
Reporting unit, carrying value 12,000,000        
Notes Receivable          
Allowance for Credit Losses, Interest Income, Income from Real Estate Notes Receivable:          
Interest income $ 2,400 $ 2,100      
Variable Interest Entity          
Principles of Consolidation:          
Number of variable interest entities | variable_interest_entity 3        
Number of notes receivable | note_receivable 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
Non-Controlling Interest Holders | Healthcare Trust of America Holdings L P          
Principles of Consolidation:          
Limited partner's capital, units outstanding (in shares) | shares 5.2        
Limited partners ownership interest (in percent) 1.40%        
HealthCare Realty Trust Incorporated | Other Investors          
Business Overview:          
Subsidiary, ownership percentage, noncontrolling owner 1.40%        
Property Entities Not Determined to be VIEs          
Principles of Consolidation:          
Equity interest owned (percent) 100.00%        
Healthcare Trust of America Holdings L P          
Principles of Consolidation:          
Equity interest owned (percent) 98.60%        
Real Estate Properties Held in Joint Ventures          
Business Overview:          
Joint venture ownership (percent) 43.00%