Earnings Per Share / Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Basic Earnings:
Net Income (Loss) Available to Common Stockholders, Basic	$ 101,576	$ 61,177
Allocation of undistributed earnings to participating securities	0	0
Net Income Available To Common Stockholders After Allocation of Undistributed Earnings to Participating Securities Basic	101,576	61,177
Effect of Dilutive Securities:
Stock Based Compensation	0	0
Diluted Earnings:
Diluted Earnings: Net income (Loss) attributable to the Company	$ 101,576	$ 61,177
Net income (loss) attributable to the company (in shares / units)	158,555,000	158,202,000
Allocation of undistributed earnings to participating securities (in shares / units)	0	0
Weighted Average Number Of Shares Outstanding After Allocation of Undistributed Earnings to Participating Securities Basic (in shares)	158,555,000	158,202,000
Stock Based Compensation (in shares / units)	501,000	430,000
Diluted Earnings: Net income (Loss) attributable to the Company (in shares / units)	159,056,000	158,632,000
Net income (loss) attributable to the company (in dollars per share / unit)	$ 0.64	$ 0.39
Earnings Per Share, Diluted	$ 0.64	$ 0.39
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,117,298	665,381
Boston Properties Limited Partnership
Basic Earnings:
Net Income (Loss) Available to Common Stockholders, Basic	$ 114,799	$ 69,859
Allocation of undistributed earnings to participating securities	0	0
Net Income Available To Common Stockholders After Allocation of Undistributed Earnings to Participating Securities Basic	114,799	69,859
Effect of Dilutive Securities:
Stock Based Compensation	0	0
Diluted Earnings:
Diluted Earnings: Net income (Loss) attributable to the Company	$ 114,799	$ 69,859
Net income (loss) attributable to the company (in shares / units)	176,318,000	175,752,000
Allocation of undistributed earnings to participating securities (in shares / units)	0	0
Weighted Average Number Of Shares Outstanding After Allocation of Undistributed Earnings to Participating Securities Basic (in shares)	176,318,000	175,752,000
Stock Based Compensation (in shares / units)	501,000	430,000
Diluted Earnings: Net income (Loss) attributable to the Company (in shares / units)	176,819,000	176,182,000
Net income (loss) attributable to the company (in dollars per share / unit)	$ 0.65	$ 0.40
Earnings Per Share, Diluted	$ 0.65	$ 0.40
Redeemable Common Units	17,763,000	17,550,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,117,298	665,381

BXP, Inc. 10-Q