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Derivative Instruments and Hedging Activities (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended	9 Months Ended
	Apr. 08, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Apr. 01, 2025
Derivative [Line Items]
Interest expense		$ 164,299	$ 163,194		$ 490,526	$ 474,727
Santa Monica Business Park [Member]
Derivative [Line Items]
Debt	$ 200,000
2024 Unsecured Term Loan
Derivative [Line Items]
Debt	100,000
Interest Rate Swap
Derivative [Line Items]
Derivative, Notional Amount	$ 300,000	900,000		$ 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	$ 300,000
Derivative, Fixed Interest Rate	3.6775%
Derivative, Maturity Date	Apr. 06, 2026				Apr. 06, 2026
Interest expense		$ (500)		$ (1,000)