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Consolidated Statement of Capital and Noncontrolling Interests - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Common Stock, Shares, Outstanding 158,174,995 156,940,866    
Effective portion of interest rate contracts $ 9,202 $ (14,405) $ 19,396  
Amortization of interest rate contracts 12,618 6,703 6,707  
Proceeds from sale of interest in property partnerships and contributions from noncontrolling interests in property partnerships 376,544 244,541 849  
Distributions to noncontrolling interests in property partnerships $ (77,704) $ (69,975) $ (85,518)  
General Partner [Member]        
Common Stock, Shares, Outstanding 1,762,000 1,755,000 1,750,000 1,746,000
Net activity from contributions and unearned compensation 5,000 5,000 1,000  
Conversion of redeemable partnership units 2,000   3,000  
Limited Partner [Member]        
Common Stock, Shares, Outstanding 156,413,000 155,185,000 155,008,000 154,799,000
Net activity from contributions and unearned compensation 82,000 75,000 30,000  
Conversion of redeemable partnership units 1,146,000 102,000 179,000  
Partners' Capital (General and Limited Partners)[Member]        
Beginning Balance $ 4,391,985 $ 4,973,951 $ 5,299,428 $ 4,173,290
Net activity from contributions and unearned compensation, value 5,657 4,321 8,291  
Allocated net income for the period 21,080 197,223 860,485  
Distributions (617,695) (615,011) (614,412)  
Conversion of redeemable partnership units, value 40,564 3,794 6,539  
Adjustment to reflect redeemable partnership units at redemption value (105,663) (76,220) 865,235  
Proceeds from sale of interest in property partnerships and contributions from noncontrolling interests in property partnerships 74,091 160,416    
Accumulated Other Comprehensive Loss [Member]        
Beginning Balance (2,072) (21,147) (13,718) (36,662)
Effective portion of interest rate contracts 8,262 (12,927) 17,435  
Amortization of interest rate contracts 10,813 5,498 5,509  
Noncontrolling interest - property partnerships [Member]        
Beginning Balance 1,933,545 1,640,704 1,547,317 1,556,553
Allocated net income for the period 67,516 78,661 74,857  
Amortization of interest rate contracts 576 576 576  
Proceeds from sale of interest in property partnerships and contributions from noncontrolling interests in property partnerships 302,453 84,125 849  
Distributions to noncontrolling interests in property partnerships (77,704) (69,975) (85,518)  
Total Capital [Member]        
Beginning Balance 6,323,458 6,593,508 6,833,027 5,693,181
Net activity from contributions and unearned compensation, value 5,657 4,321 8,291  
Allocated net income for the period 88,596 275,884 935,342  
Distributions (617,695) (615,011) (614,412)  
Conversion of redeemable partnership units, value 40,564 3,794 6,539  
Adjustment to reflect redeemable partnership units at redemption value (105,663) (76,220) 865,235  
Effective portion of interest rate contracts 8,262 (12,927) 17,435  
Amortization of interest rate contracts 11,389 6,074 6,085  
Proceeds from sale of interest in property partnerships and contributions from noncontrolling interests in property partnerships 376,544 244,541 849  
Distributions to noncontrolling interests in property partnerships (77,704) (69,975) (85,518)  
Noncontrolling interest - Redeemable partnership units [Member]        
Beginning Balance 1,378,573 1,347,575 1,280,886 $ 2,078,603
Net activity from contributions and unearned compensation, value 34,815 45,895 46,408  
Allocated net income for the period 2,400 22,548 96,780  
Distributions (73,485) (73,331) (71,714)  
Conversion of redeemable partnership units, value (40,564) (3,794) (6,539)  
Adjustment to reflect redeemable partnership units at redemption value 105,663 76,220 (865,235)  
Effective portion of interest rate contracts 940 (1,478) 1,961  
Amortization of interest rate contracts $ 1,229 $ 629 $ 622