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Consolidated Statement of Capital and Noncontrolling Interests - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Common Stock, Shares, Outstanding 156,757,867 156,544,849    
Net activity from stock option and incentive plan, value $ 53,663 $ 71,383 $ 48,621  
Issuance of operating partnership units for 360 Park Avenue South 0 99,689 0  
Preferred Stock Redemption Charge 0 (6,412) 0  
Effective portion of interest rate contracts 19,396 8,544 (7,848)  
Amortization of interest rate contracts 6,707 6,704 6,697  
Contributions from noncontrolling interests in property partnerships 849 18,002 8,219  
Distributions to noncontrolling interests in property partnerships $ (85,518) $ (259,764) $ (58,811)  
Accounting Standards Update 2018-09        
Accounting Standards Update [Extensible List]       Accounting Standards Update 2014-09 [Member]
General Partner [Member]        
Common Stock, Shares, Outstanding 1,750,000 1,746,000 1,731,000 1,727,000
Net activity from contributions and unearned compensation 1,000 5,000 1,000  
Conversion of redeemable partnership units 3,000 10,000 3,000  
Limited Partner [Member]        
Common Stock, Shares, Outstanding 155,008,000 154,799,000 153,988,000 153,063,000
Net activity from contributions and unearned compensation 30,000 295,000 72,000  
Conversion of redeemable partnership units 179,000 516,000 853,000  
Partners' Capital (General and Limited Partners)[Member]        
Beginning Balance $ 5,299,428 $ 4,173,290 $ 4,554,639 $ 3,380,175
Net activity from contributions and unearned compensation, value 8,291 26,614 10,062  
Allocated net income for the period 860,485 512,474 882,275  
Distributions (614,412) (612,461) (609,852)  
Preferred Stock Redemption Charge   (6,412)    
Conversion of redeemable partnership units, value 6,539 18,386 29,689  
Adjustment to reflect redeemable partnership units at redemption value 865,235 (319,950) 863,795  
Partners' Capital (General and Limited Partners)[Member] | Cumulative Effect, Period of Adoption, Adjustment        
Beginning Balance       (1,505)
Preferred Units [Member]        
Beginning Balance 0 0 193,623 193,623
Allocated net income for the period   2,560 10,500  
Distributions   (2,560) (10,500)  
Preferred Units [Member] | Boston Properties Limited Partnership        
Preferred Stock, Redemption Amount   (193,623)    
Accumulated Other Comprehensive Loss [Member]        
Beginning Balance (13,718) (36,662) (49,890) (48,335)
Effective portion of interest rate contracts 17,435 7,703 (7,066)  
Amortization of interest rate contracts 5,509 5,525 5,511  
Noncontrolling interest - property partnerships [Member]        
Beginning Balance 1,547,317 1,556,553 1,726,933 1,728,689
Allocated net income for the period 74,857 70,806 48,260  
Amortization of interest rate contracts 576 576 576  
Contributions from noncontrolling interests in property partnerships 849 18,002 8,219  
Distributions to noncontrolling interests in property partnerships (85,518) (259,764) (58,811)  
Total Capital [Member]        
Beginning Balance 6,833,027 5,693,181 6,425,305 5,254,152
Net activity from contributions and unearned compensation, value 8,291 26,614 10,062  
Allocated net income for the period 935,342 585,840 941,035  
Distributions (614,412) (615,021) (620,352)  
Preferred Stock, Redemption Amount   (193,623)    
Preferred Stock Redemption Charge   (6,412)    
Conversion of redeemable partnership units, value 6,539 18,386 29,689  
Adjustment to reflect redeemable partnership units at redemption value 865,235 (319,950) 863,795  
Effective portion of interest rate contracts 17,435 7,703 (7,066)  
Amortization of interest rate contracts 6,085 6,101 6,087  
Contributions from noncontrolling interests in property partnerships 849 18,002 8,219  
Distributions to noncontrolling interests in property partnerships (85,518) (259,764) (58,811)  
Total Capital [Member] | Cumulative Effect, Period of Adoption, Adjustment        
Beginning Balance       (1,505)
Noncontrolling interest - Redeemable partnership units [Member]        
Beginning Balance 1,280,886 2,078,603 1,643,024 2,468,753
Net activity from contributions and unearned compensation, value 46,408 45,773 39,318  
Allocated net income for the period 96,780 55,931 97,704  
Distributions (71,714) (68,822) (68,921)  
Issuance of operating partnership units for 360 Park Avenue South   99,689    
Conversion of redeemable partnership units, value (6,539) (18,386) (29,689)  
Adjustment to reflect redeemable partnership units at redemption value (865,235) 319,950 (863,795)  
Effective portion of interest rate contracts 1,961 841 (782)  
Amortization of interest rate contracts $ 622 $ 603 $ 610  
Noncontrolling interest - Redeemable partnership units [Member] | Cumulative Effect, Period of Adoption, Adjustment        
Beginning Balance       $ (174)