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Summary Of Significant Accounting Policies (Carrying Value Of Indebtedness And Corresponding Estimate Of Fair Value) (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Carrying Amount [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales-type lease receivable, net $ 15,672 $ 14,657
Total 53,391 108,383
Unsecured senior notes, net [1] 9,806,100 10,645,077
Unsecured exchangeable senior notes, net 976,263 0
Unsecured commercial paper 750,000 500,000
Mortgage notes payable, net 4,280,067 4,276,609
Unsecured line of credit 0 0
Unsecured term loan, net 797,053 798,813
Total 16,609,483 16,220,499
Carrying Amount [Member] | Fair Value, Inputs, Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Subtotal 11,532,363 11,145,077
Carrying Amount [Member] | Fair Value, Inputs, Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Subtotal 5,077,120 5,075,422
Carrying Amount [Member] | Related Party    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Related party note receivable, net 28,346 88,779
Carrying Amount [Member] | Nonrelated Party    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Note receivable, net 9,373 4,947
Estimated Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales-type lease receivable, net 13,911 13,632
Total 52,485 109,032
Unsecured senior notes, net [1] 9,554,844 10,005,606
Unsecured exchangeable senior notes, net 958,745 0
Unsecured commercial paper 750,000 500,000
Mortgage notes payable, net 4,010,151 3,808,095
Unsecured line of credit 0 0
Unsecured term loan, net 805,687 799,580
Total 16,079,427 15,113,281
Estimated Fair Value [Member] | Fair Value, Inputs, Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Subtotal 11,263,589 10,505,606
Estimated Fair Value [Member] | Fair Value, Inputs, Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Subtotal 4,815,838 4,607,675
Estimated Fair Value [Member] | Related Party    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Related party note receivable, net 28,716 89,213
Estimated Fair Value [Member] | Nonrelated Party    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Note receivable, net 9,858 6,187
Sales-type lease receivable, net 15,672 14,657
Unsecured senior notes, net 9,806,100 10,645,077
Unsecured exchangeable senior notes, net 976,263 0
Unsecured commercial paper 750,000 500,000
Mortgage notes payable, net 4,280,067 4,276,609
Unsecured line of credit 0 0
Unsecured term loan, net 797,053 798,813
Related Party    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Related party note receivable, net 28,346 88,779
Nonrelated Party    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Related party note receivable, net $ 9,373 $ 4,947
[1] If trading volume for the period is low, the valuation could be categorized as Level 2.