XML 59 R63.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Acquisitions of Real Estate Property 2019 Acquisitions (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Sep. 30, 2019
USD ($)
property
Dec. 31, 2019
USD ($)
property
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Business Acquisition [Line Items]        
Number of real estate properties   1,200    
Payments to acquire real estate | $   $ 958,125 $ 265,907 $ 664,684
Development Projects        
Business Acquisition [Line Items]        
Number of real estate properties   22    
LGM Acquisition | Le Groupe Maurice        
Business Acquisition [Line Items]        
VIE ownership percentage 87.00%      
Number of real estate properties 34      
Recognized identifiable assets acquired and liabilities assumed, property, plant, and equipment | $ $ 1,800,000      
LGM Acquisition | Le Groupe Maurice | Development Projects        
Business Acquisition [Line Items]        
Number of real estate properties 5      
Other 2019 Acquisitions        
Business Acquisition [Line Items]        
Vacant land parcels acquired   1    
Payments to acquire real estate | $   $ 237,000    
Other 2019 Acquisitions | Office Operations        
Business Acquisition [Line Items]        
Number of real estate properties   2    
Other 2019 Acquisitions | Research and Innovation Center | Office Operations        
Business Acquisition [Line Items]        
Number of real estate properties   1    
Other 2019 Acquisitions | Medical Office Buildings | Office Operations        
Business Acquisition [Line Items]        
Number of real estate properties   1    
Other 2019 Acquisitions | Seniors Housing Communities | Senior Living Operations        
Business Acquisition [Line Items]        
Number of real estate properties   2