Financial Instruments and Fair Value Measurements - Financial Instruments Not Carried at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Carrying value
Fair value of financial assets and liabilities
Mortgages payable assumed in connection with acquisitions	$ 842,300	$ 1,114,100
Notes and bonds payable	14,114,200	12,257,300
Estimated fair value
Fair value of financial assets and liabilities
Mortgages payable assumed in connection with acquisitions	810,400	1,154,700
Notes and bonds payable	12,522,800	13,114,500
Mortgages payable
Fair value of financial assets and liabilities
Unamortized net premiums	12,400	28,700
Deferred financing costs	800	800
Notes and bonds payable
Fair value of financial assets and liabilities
Unamortized net premiums	224,600	295,500
Deferred financing costs	$ 60,700	$ 53,100