Fair Value Measurements - Financial Instrument Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets:
Derivative assets	$ 44,753	$ 83,100
Liabilities:
Derivative liabilities	78,344	64,724
Carrying value
Assets:
Derivative assets	44,800	83,100
Total assets	44,800	83,100
Liabilities:
Mortgages payable	822,000	842,300
Notes and bonds payable	17,417,900	14,114,200
Derivative liabilities	78,300	64,700
Total liabilities	18,318,200	15,021,200
Fair value
Liabilities:
Mortgages payable	806,100	810,400
Notes and bonds payable	15,478,200	12,522,800
Level 1 | Fair value
Assets:
Derivative assets	0	0
Total assets	0	0
Liabilities:
Mortgages payable	0	0
Notes and bonds payable	0	0
Derivative liabilities	0	0
Total liabilities	0	0
Level 2 | Fair value
Assets:
Derivative assets	44,800	83,100
Total assets	44,800	83,100
Liabilities:
Mortgages payable	0	0
Notes and bonds payable	15,478,200	12,522,800
Derivative liabilities	78,300	64,700
Total liabilities	15,556,500	12,587,500
Level 3 | Fair value
Assets:
Derivative assets	0	0
Total assets	0	0
Liabilities:
Mortgages payable	806,100	810,400
Notes and bonds payable	0	0
Derivative liabilities	0	0
Total liabilities	$ 806,100	$ 810,400