Consolidated Statements Of Operations - USD ($) shares in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue
Lease		$ 739,255,000	$ 692,260,000	$ 2,179,274,000	$ 2,062,102,000
Total revenue		790,523,000	730,056,000	2,318,757,000	2,157,558,000
Expenses
Rental		281,702,000	258,281,000	825,805,000	764,373,000
General and administrative		32,519,000	34,560,000	110,378,000	117,924,000
Transaction costs		1,650,000	1,888,000	2,146,000	2,970,000
Depreciation and amortization		190,675,000	179,412,000	551,445,000	539,815,000
Total expenses		518,994,000	481,093,000	1,520,810,000	1,442,241,000
Other income (expense)
Loss from Unconsolidated Joint Ventures		(3,524,000)	(5,597,000)	(1,389,000)	(1,745,000)
Gains on sales of real estate		262,345,000	348,000	381,293,000	8,104,000
Interest and other income (loss)		3,728,000	1,520,000	6,151,000	4,140,000
Other Income - assignment fee		0	0	6,624,000	0
Gains (losses) from investments in securities		(1,571,000)	(190,000)	(8,549,000)	3,744,000
Loss from early extinguishment of debt		0	0	0	(898,000)
Interest expense		(111,846,000)	(105,794,000)	(317,216,000)	(320,015,000)
Net income		420,661,000	139,250,000	864,861,000	408,647,000
Net income attributable to noncontrolling interests
Noncontrolling interests in property partnerships		(18,801,000)	(18,971,000)	(54,896,000)	(52,602,000)
Noncontrolling interest - common units of the Operating Partnership		(40,883,000)	(11,982,000)	(82,821,000)	(35,393,000)
Net income attributable to the Company		360,977,000	108,297,000	727,144,000	320,652,000
Preferred dividends / distributions		0	0	0	(2,560,000)
Preferred Stock Redemption Charge		0	0	0	(6,412,000)
Net income attributable to the Company's common shareholders / unitholders		$ 360,977,000	$ 108,297,000	$ 727,144,000	$ 311,680,000
Basic earnings per common share / unit attributable to the Company
Earnings Per Share After Allocation of Undistributed Earnings to Participating Securities Basic (dollars per share)		$ 2.30	$ 0.69	$ 4.63	$ 2.00
Weighted average number of common shares / units outstanding (in shares / units)		156,754	156,183	156,708	156,062
Diluted earnings per common share / unit attributable to the Company
Diluted Earnings: Net income, Per Share Amount (in dollars per share / unit)		$ 2.29	$ 0.69	$ 4.62	$ 1.99
Weighted average number of common and common equivalent shares / units outstanding (in shares / units)		157,133	156,598	157,144	156,394
Boston Properties Limited Partnership
Revenue
Lease		$ 739,255,000	$ 692,260,000	$ 2,179,274,000	$ 2,062,102,000
Total revenue		790,523,000	730,056,000	2,318,757,000	2,157,558,000
Expenses
Rental		281,702,000	258,281,000	825,805,000	764,373,000
General and administrative		32,519,000	34,560,000	110,378,000	117,924,000
Transaction costs		1,650,000	1,888,000	2,146,000	2,970,000
Depreciation and amortization		188,969,000	177,677,000	546,271,000	533,255,000
Total expenses		517,288,000	479,358,000	1,515,636,000	1,435,681,000
Other income (expense)
Loss from Unconsolidated Joint Ventures		(3,524,000)	(5,597,000)	(1,389,000)	(1,745,000)
Gains on sales of real estate		262,357,000	348,000	385,349,000	8,104,000
Interest and other income (loss)		3,728,000	1,520,000	6,151,000	4,140,000
Other Income - assignment fee		0	0	6,624,000	0
Gains (losses) from investments in securities		(1,571,000)	(190,000)	(8,549,000)	3,744,000
Loss from early extinguishment of debt		0	0	0	(898,000)
Interest expense		(111,846,000)	(105,794,000)	(317,216,000)	(320,015,000)
Net income		422,379,000	140,985,000	874,091,000	415,207,000
Net income attributable to noncontrolling interests
Noncontrolling interests in property partnerships		(18,801,000)	(18,971,000)	(54,896,000)	(52,602,000)
Net income attributable to the Company		403,578,000	122,014,000	819,195,000	362,605,000
Preferred dividends / distributions		0	0	0	(2,560,000)
Preferred Stock Redemption Charge		0	0	0	(6,412,000)
Net income attributable to the Company's common shareholders / unitholders		$ 403,578,000	$ 122,014,000	$ 819,195,000	$ 353,633,000
Basic earnings per common share / unit attributable to the Company
Earnings Per Share After Allocation of Undistributed Earnings to Participating Securities Basic (dollars per share)		$ 2.31	$ 0.70	$ 4.69	$ 2.04
Weighted average number of common shares / units outstanding (in shares / units)		174,416	173,194	174,339	173,078
Diluted earnings per common share / unit attributable to the Company
Diluted Earnings: Net income, Per Share Amount (in dollars per share / unit)		$ 2.30	$ 0.70	$ 4.68	$ 2.04
Weighted average number of common and common equivalent shares / units outstanding (in shares / units)		174,795	173,609	174,775	173,410
Parking and Other [Member]
Revenue
Other revenue		$ 28,154,000	$ 23,507,000	$ 80,234,000	$ 58,727,000
Parking and Other [Member] | Boston Properties Limited Partnership
Revenue
Other revenue		28,154,000	23,507,000	80,234,000	58,727,000
Hotel [Member]
Revenue
Other revenue	[1]	11,749,000	5,189,000	28,395,000	7,382,000
Expenses
Operating expense		8,548,000	3,946,000	19,832,000	7,993,000
Hotel [Member] | Boston Properties Limited Partnership
Revenue
Other revenue		11,749,000	5,189,000	28,395,000	7,382,000
Expenses
Operating expense		8,548,000	3,946,000	19,832,000	7,993,000
Real Estate, Other [Member]
Revenue
Other revenue		3,900,000	3,006,000	11,204,000	9,166,000
Expenses
Operating expense		3,900,000	3,006,000	11,204,000	9,166,000
Real Estate, Other [Member] | Boston Properties Limited Partnership
Revenue
Other revenue		3,900,000	3,006,000	11,204,000	9,166,000
Expenses
Operating expense		3,900,000	3,006,000	11,204,000	9,166,000
Management Service [Member]
Revenue
Other revenue		7,465,000	6,094,000	19,650,000	20,181,000
Management Service [Member] | Boston Properties Limited Partnership
Revenue
Other revenue		$ 7,465,000	$ 6,094,000	$ 19,650,000	$ 20,181,000

[1] Rental Revenue is equal to Total Revenue per the Company’s Consolidated Statements of Operations, less Development and Management Services Revenue and Direct Reimbursements of Payroll and Related Costs from Management Services Contracts Revenue per the Consolidated Statements of Operations.