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Consolidated Statements Of Equity - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock [Member]
Preferred Stock [Member]
Additional Paid-In Capital [Member]
Dividends In Excess Of Earnings [Member]
Dividends In Excess Of Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment
Treasury Stock, at cost [Member]
Accumulated Other Comprehensive Loss [Member]
Noncontrolling Interests [Member]
Noncontrolling Interests [Member]
Cumulative Effect, Period of Adoption, Adjustment
Noncontrolling interest - property partnerships [Member]
Equity, shares at Dec. 31, 2019     154,790,000                  
Equity, value at Dec. 31, 2019 $ 8,014,236   $ 1,548 $ 200,000 $ 6,294,719 $ (760,523)   $ (2,722) $ (48,335) $ 600,860   $ 1,728,689
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Accounting Standards Update [Extensible List] | Accounting Standards Update 2018-09 Accounting Standards Update 2018-09                      
Redemption of operating partnership units to common stock, shares     774,000                  
Redemption of operating partnership units to common stock, value $ 0   $ 8   26,674         (26,682)    
Allocated net income for the year 993,786         862,416       97,090   34,280
Dividends/distributions declared (516,929)         (465,108)       (51,821)    
Shares issued pursuant to stock purchase plan, shares     7,000                  
Shares issued pursuant to stock purchase plan, value 759       759              
Net activity from stock option and incentive plan, shares     65,000                  
Net activity from stock option and incentive plan, value 41,924       9,646         32,278    
Preferred Stock Redemption Charge 0                      
Contributions from noncontrolling interests in property partnerships 7,364                     7,364
Distributions to noncontrolling interests in property partnerships (40,091)                     (40,091)
Effective portion of interest rate contracts (9,352)               (8,416) (936)    
Amortization of interest rate contracts 5,020               4,129 459   432
Reallocation of noncontrolling interest 0       16,278         (16,278)    
Equity, shares at Sep. 30, 2020     155,636,000                  
Equity, value at Sep. 30, 2020 8,495,038 $ (1,679) $ 1,556 200,000 6,348,076 (364,720) $ (1,505) (2,722) (52,622) 634,796 $ (174) 1,730,674
Equity, shares at Jun. 30, 2020     155,622,000                  
Equity, value at Jun. 30, 2020 8,547,146   $ 1,556 200,000 6,340,665 (302,511)   (2,722) (54,921) 640,491   1,724,588
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Redemption of operating partnership units to common stock, shares     9,000                  
Redemption of operating partnership units to common stock, value 0       338         (338)    
Allocated net income for the year 118,060         92,934       9,565   15,561
Dividends/distributions declared (172,326)         (155,143)       (17,183)    
Shares issued pursuant to stock purchase plan, shares     5,000                  
Shares issued pursuant to stock purchase plan, value 434       434              
Net activity from stock option and incentive plan, value 8,639       1,390         7,249    
Preferred Stock Redemption Charge 0                      
Contributions from noncontrolling interests in property partnerships 1,407                     1,407
Distributions to noncontrolling interests in property partnerships (11,026)                     (11,026)
Effective portion of interest rate contracts 1,027               917 110    
Amortization of interest rate contracts 1,677               1,382 151   144
Reallocation of noncontrolling interest 0       5,249         (5,249)    
Equity, shares at Sep. 30, 2020     155,636,000                  
Equity, value at Sep. 30, 2020 $ 8,495,038 $ (1,679) $ 1,556 200,000 6,348,076 (364,720) $ (1,505) (2,722) (52,622) 634,796 $ (174) 1,730,674
Equity, shares at Dec. 31, 2020 155,718,825   155,719,000                  
Equity, value at Dec. 31, 2020 $ 8,339,612   $ 1,557 200,000 6,356,791 (509,653)   (2,722) (49,890) 616,596   1,726,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Redemption of operating partnership units to common stock, shares     227,000                  
Redemption of operating partnership units to common stock, value 0   $ 2   8,031         (8,033)    
Allocated net income for the year 408,647         320,652       35,393   52,602
Dividends/distributions declared (513,351)         (461,608)       (51,743)    
Shares issued pursuant to stock purchase plan, shares     9,000                  
Shares issued pursuant to stock purchase plan, value 1,004       1,004              
Net activity from stock option and incentive plan, shares     251,000                  
Net activity from stock option and incentive plan, value 60,228   $ 3   20,893         39,332    
Preferred Stock, Redeemed (193,623)     (200,000) 6,377              
Preferred Stock Redemption Charge (6,412)         (6,412)            
Contributions from noncontrolling interests in property partnerships 13,738                     13,738
Distributions to noncontrolling interests in property partnerships (65,604)                     (65,604)
Effective portion of interest rate contracts 5,482               4,943 539    
Amortization of interest rate contracts 5,028               4,144 452   432
Reallocation of noncontrolling interest $ 0       22,706         (22,706)    
Equity, shares at Sep. 30, 2021 156,206,491   156,206,000                  
Equity, value at Sep. 30, 2021 $ 8,054,749   $ 1,562 0 6,415,802 (657,021)   (2,722) (40,803) 609,830   1,728,101
Equity, shares at Jun. 30, 2021     156,136,000                  
Equity, value at Jun. 30, 2021 8,089,993   $ 1,561 0 6,405,916 (612,247)   (2,722) (43,166) 615,308   1,725,343
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Redemption of operating partnership units to common stock, shares     50,000                  
Redemption of operating partnership units to common stock, value 0   $ 1   1,747         (1,748)    
Allocated net income for the year 139,250         108,308       11,971   18,971
Dividends/distributions declared (170,285)         (153,082)       (17,203)    
Shares issued pursuant to stock purchase plan, shares     4,000                  
Shares issued pursuant to stock purchase plan, value 520       520              
Net activity from stock option and incentive plan, shares     16,000                  
Net activity from stock option and incentive plan, value 8,864       1,185         7,679    
Preferred Stock Redemption Charge 0                      
Contributions from noncontrolling interests in property partnerships 11,318                     11,318
Distributions to noncontrolling interests in property partnerships (27,675)                     (27,675)
Effective portion of interest rate contracts 1,088               981 107    
Amortization of interest rate contracts 1,676               1,382 150   144
Reallocation of noncontrolling interest $ 0       6,434         (6,434)    
Equity, shares at Sep. 30, 2021 156,206,491   156,206,000                  
Equity, value at Sep. 30, 2021 $ 8,054,749   $ 1,562 $ 0 $ 6,415,802 $ (657,021)   $ (2,722) $ (40,803) $ 609,830   $ 1,728,101