Summary Of Significant Accounting Policies (Carrying Value Of Indebtedness And Corresponding Estimate Of Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	$ 4,947	$ 1,714
Sales-type lease receivable, net	14,657	13,704
Mortgage notes payable, net	4,276,609	4,166,379
Unsecured senior notes, net	10,645,077	10,491,617
Unsecured line of credit	0	0
Unsecured term loan, net	798,813	1,198,301
Unsecured commercial paper	500,000	0
Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party notes receivable, net	88,779	88,779
Carrying Amount [Member]
Summary Of Significant Accounting Policies [Line Items]
3-Month United States Treasury Bills	0	302,746
Sales-type lease receivable, net	14,657	13,704
Total	108,383	104,197
Mortgage notes payable, net	4,276,609	4,166,379
Unsecured senior notes, net	10,645,077	10,491,617
Unsecured line of credit	0	0
Unsecured term loan, net	798,813	1,198,301
Unsecured commercial paper	500,000	0
Total	16,220,499	15,856,297
Carrying Amount [Member] \| Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party notes receivable, net	88,779	88,779
Carrying Amount [Member] \| Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	4,947	1,714
Estimated Fair Value [Member]
Summary Of Significant Accounting Policies [Line Items]
3-Month United States Treasury Bills	0	302,746
Sales-type lease receivable, net	13,632	13,338
Total	109,032	105,608
Mortgage notes payable, net	3,808,095	3,705,513
Unsecured senior notes, net	10,005,606	9,697,393
Unsecured line of credit	0	0
Unsecured term loan, net	799,580	1,196,945
Unsecured commercial paper	500,000	0
Total	15,113,281	14,599,851
Estimated Fair Value [Member] \| Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party notes receivable, net	89,213	90,593
Estimated Fair Value [Member] \| Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	$ 6,187	$ 1,677

Summary Of Significant Accounting Policies [Line Items]

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Fair value portion of asset recognized for present right to economic benefit.

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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.

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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.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Debt (bills, notes or bonds) that are issued by the government of the United States which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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