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Earnings Per Share / Common Unit (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Basic Earnings:      
Net income attributable to the Company $ 14,272 $ 190,215 $ 848,947
Net income (loss) attributable to the company (in shares / units) 157,468,000 156,863,000 156,726,000
Net income (loss) attributable to the company (in dollars per share / unit) $ 0.09 $ 1.21 $ 5.42
Allocation of undistributed earnings to participating securities     $ (891)
Allocation of undistributed earnings to participating securities (in shares / units)     0
Allocation of undistributed earnings to participating securities (in dollars per share / unit)     $ (0.01)
Net Income Available To Common Stockholders After Allocation of Undistributed Earnings to Participating Securities Basic     $ 848,056
Weighted Average Number Of Shares Outstanding After Allocation of Undistributed Earnings to Participating Securities Basic (in shares)     156,726,000
Earnings Per Share After Allocation of Undistributed Earnings to Participating Securities Basic (dollars per share) $ 0.09 $ 1.21 $ 5.41
Effect of Dilutive Securities:      
Stock Based Compensation $ 0 $ 0 $ 0
Stock Based Compensation (in shares / units) 325,000 338,000 411,000
Weighted Average Number Diluted Shares Outstanding Adjustment (per share) $ 0 $ 0 $ (0.01)
Diluted Earnings:      
Diluted Earnings: Net income attributable to the Company $ 14,272 $ 190,215 $ 848,056
Diluted Earnings: Net income attributable to the Company (in shares / units) 157,793,000 157,201,000 157,137,000
Diluted Earnings: Net income, Per Share Amount (in dollars per share / unit) $ 0.09 $ 1.21 $ 5.40
Boston Properties Limited Partnership      
Redeemable Common Units 17,922,000 17,933,000 17,634,000
Basic Earnings:      
Net income attributable to the Company $ 23,480 $ 219,771 $ 957,265
Net income (loss) attributable to the company (in shares / units) 175,390,000 174,796,000 174,360,000
Net income (loss) attributable to the company (in dollars per share / unit) $ 0.13 $ 1.26 $ 5.49
Allocation of undistributed earnings to participating securities     $ (991)
Allocation of undistributed earnings to participating securities (in shares / units)     0
Allocation of undistributed earnings to participating securities (in dollars per share / unit)     $ (0.01)
Net Income Available To Common Stockholders After Allocation of Undistributed Earnings to Participating Securities Basic     $ 956,274
Weighted Average Number Of Shares Outstanding After Allocation of Undistributed Earnings to Participating Securities Basic (in shares)     174,360,000
Earnings Per Share After Allocation of Undistributed Earnings to Participating Securities Basic (dollars per share) $ 0.13 $ 1.26 $ 5.48
Effect of Dilutive Securities:      
Stock Based Compensation $ 0 $ 0 $ 0
Stock Based Compensation (in shares / units) 325,000 338,000 411,000
Weighted Average Number Diluted Shares Outstanding Adjustment (per share) $ 0 $ (0.01) $ (0.01)
Diluted Earnings:      
Diluted Earnings: Net income attributable to the Company $ 23,480 $ 219,771 $ 956,274
Diluted Earnings: Net income attributable to the Company (in shares / units) 175,715,000 175,134,000 174,771,000
Diluted Earnings: Net income, Per Share Amount (in dollars per share / unit) $ 0.13 $ 1.25 $ 5.47