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Summary Of Significant Accounting Policies (Carrying Value Of Indebtedness And Corresponding Estimate Of Fair Value) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Summary Of Significant Accounting Policies [Line Items]
Sales-type lease receivable, net	$ 15,430	$ 14,657
Mortgage notes payable, net	4,279,482	4,276,609
Unsecured senior notes, net	9,803,336	10,645,077
Unsecured exchangeable senior notes, net	975,080	0
Unsecured line of credit	0	0
Unsecured term loan, net	796,798	798,813
Unsecured commercial paper	750,000	500,000
Related Party
Summary Of Significant Accounting Policies [Line Items]
Note Receivable, after Allowance for Credit Loss	88,879	88,779
Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note Receivable, after Allowance for Credit Loss	8,898	4,947
Carrying Amount [Member]
Summary Of Significant Accounting Policies [Line Items]
Sales-type lease receivable, net	15,430	14,657
Total	113,207	108,383
Mortgage notes payable, net	4,279,482	4,276,609
Unsecured senior notes, net	9,803,336	10,645,077
Unsecured exchangeable senior notes, net	975,080	0
Unsecured line of credit	0	0
Unsecured term loan, net	796,798	798,813
Unsecured commercial paper	750,000	500,000
Total	16,604,696	16,220,499
Carrying Amount [Member] | Related Party
Summary Of Significant Accounting Policies [Line Items]
Note Receivable, after Allowance for Credit Loss	88,879	88,779
Carrying Amount [Member] | Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	8,898	4,947
Estimated Fair Value [Member]
Summary Of Significant Accounting Policies [Line Items]
Sales-type lease receivable, net	13,863	13,632
Total	110,365	109,032
Mortgage notes payable, net	3,971,687	3,808,095
Unsecured senior notes, net	9,494,698	10,005,606
Unsecured exchangeable senior notes, net	999,132	0
Unsecured line of credit	0	0
Unsecured term loan, net	796,312	799,580
Unsecured commercial paper	750,000	500,000
Total	16,011,829	15,113,281
Estimated Fair Value [Member] | Related Party
Summary Of Significant Accounting Policies [Line Items]
Note Receivable, after Allowance for Credit Loss	87,987	89,213
Estimated Fair Value [Member] | Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	$ 8,515	$ 6,187

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