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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, 2024 | Dec. 31, 2023
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Summary Of Significant Accounting Policies [Line Items] |  |  |
Note receivable, net |  | $ 3,937 | $ 1,714
Sales-type lease receivable, net |  | 14,429 | 13,704
Mortgage notes payable, net |  | 4,275,155 | 4,166,379
Unsecured senior notes, net |  | 10,642,033 | 10,491,617
Unsecured line of credit |  | 0 | 0
Unsecured term loan, net |  | 798,058 | 1,198,301
Unsecured commercial paper |  | 500,000 | 0
Related Party |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Related party notes receivable, net |  | 88,788 | 88,779
Carrying Amount [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
3-Month United States Treasury Bills | [1] | 175,944 | 302,746
Sales-type lease receivable, net |  | 14,429 | 13,704
Total |  | 107,154 | 104,197
Mortgage notes payable, net |  | 4,275,155 | 4,166,379
Unsecured senior notes, net |  | 10,642,033 | 10,491,617
Unsecured line of credit |  | 0 | 0
Unsecured term loan, net |  | 798,058 | 1,198,301
Unsecured commercial paper |  | 500,000 | 0
Total |  | 16,215,246 | 15,856,297
Carrying Amount [Member] | Related Party |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Related party notes receivable, net |  | 88,788 | 88,779
Carrying Amount [Member] | Nonrelated Party |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Note receivable, net |  | 3,937 | 1,714
Estimated Fair Value [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
3-Month United States Treasury Bills | [1] | 175,944 | 302,746
Sales-type lease receivable, net |  | 13,563 | 13,338
Total |  | 108,500 | 105,608
Mortgage notes payable, net |  | 3,907,688 | 3,705,513
Unsecured senior notes, net |  | 10,191,058 | 9,697,393
Unsecured line of credit |  | 0 | 0
Unsecured term loan, net |  | 800,303 | 1,196,945
Unsecured commercial paper |  | 500,000 | 0
Total |  | 15,399,049 | 14,599,851
Estimated Fair Value [Member] | Related Party |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Related party notes receivable, net |  | 90,138 | 90,593
Estimated Fair Value [Member] | Nonrelated Party |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Note receivable, net |  | $ 4,799 | $ 1,677
[1] | Per the guidance in ASC 326 “Financial Instruments — Credit Losses” (“ASC 326”), the Company concluded that the risk of nonpayment is nonexistent because the U.S. Government has a long history with no credit losses and, therefore, no credit loss allowance was recorded.

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- Definition Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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