Fair Value Measurements - Financial Instruments Not Carried at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Carrying value
Fair value of financial assets and liabilities
Mortgages payable assumed in connection with acquisitions	$ 836,300	$ 842,300
Notes and bonds payable	16,383,200	14,114,200
Fair value
Fair value of financial assets and liabilities
Mortgages payable assumed in connection with acquisitions	812,500	810,400
Notes and bonds payable	14,553,600	12,522,800
Mortgages payable
Fair value of financial assets and liabilities
Unamortized net premiums	6,000	12,400
Deferred financing costs	700	800
Notes and bonds payable
Fair value of financial assets and liabilities
Unamortized net premiums	168,800	224,600
Deferred financing costs	71,800	$ 60,700
Basis adjustment on interest rate swap designated as fair value hedge	$ (4,600)