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Derivative Instruments and Hedging Activities (Narrative) (Details) $ in Thousands		9 Months Ended	12 Months Ended
	Apr. 08, 2025 USD ($)	Dec. 31, 2025 USD ($) Rate	Dec. 31, 2025 USD ($) Rate	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Apr. 01, 2025 USD ($)
Derivative [Line Items]
Interest expense			$ 653,138	$ 645,117	$ 579,572
Losses from interest rate contracts			0	0	(79)
Santa Monica Business Park [Member]
Derivative [Line Items]
Debt	$ 200,000
2024 Unsecured Term Loan
Derivative [Line Items]
Debt	100,000	$ 100,000	100,000	100,000
Interest Rate Swap
Derivative [Line Items]
Derivative, Notional Amount	$ 300,000	900,000	900,000			$ 300,000
Interest Rate Swap | Santa Monica Business Park and 2024 Unsecured Term Loan
Derivative [Line Items]
Derivative, Notional Amount		300,000	$ 300,000
Derivative, Fixed Interest Rate	3.6775%
Derivative, Maturity Date	Apr. 06, 2026		Apr. 06, 2026
Interest expense		$ (1,200)
Interest Rate Swap | 2024 Unsecured Term Loan
Derivative [Line Items]
Derivative, Fixed Interest Rate | Rate		3.6775%	3.6775%
Interest Rate Cap
Derivative [Line Items]
Derivative, Notional Amount					$ 600,000
Derivative, Number of Instruments Held					2
Losses from interest rate contracts			$ 0	$ 0	$ (79)

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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