Fair Value Measurements - Financial Instrument Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets:
Derivative assets	$ 52,195	$ 21,170
Liabilities:
Derivative liabilities	88,597	119,620
Carrying value
Assets:
Loans receivable	594,000	205,300
Derivative assets	52,200	21,200
Total assets	646,200	226,500
Liabilities:
Mortgages payable	199,800	822,400
Notes and bonds payable	21,991,700	18,562,100
Derivative liabilities	88,600	119,600
Total liabilities	22,280,100	19,504,100
Fair value
Liabilities:
Mortgages payable	195,300	814,500
Notes and bonds payable	20,429,900	17,603,700
Level 1 | Fair value
Assets:
Loans receivable	0	0
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:
Loans receivable	570,300	171,800
Derivative assets	52,200	21,200
Total assets	622,500	193,000
Liabilities:
Mortgages payable	0	0
Notes and bonds payable	19,486,500	16,620,800
Derivative liabilities	88,600	119,600
Total liabilities	19,575,100	16,740,400
Level 3 | Fair value
Assets:
Loans receivable	34,200	33,500
Derivative assets	0	0
Total assets	34,200	33,500
Liabilities:
Mortgages payable	195,300	814,500
Notes and bonds payable	943,400	982,900
Derivative liabilities	0	0
Total liabilities	$ 1,138,700	$ 1,797,400