Common Stock Conversion Rate

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- Definition

Number Of Series Of Preferred Units Outstanding.

+ References

No definition available.

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- Definition

OP Unit Conversion Rate.

+ References

No definition available.

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- Definition

Restriction On Redemption Of OP Units From Date Of Issuance In Years

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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- Definition

Net rentable area for properties owned.

+ References

No definition available.

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

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- Definition

Date the preferred stock has been redeemed, in CCYY-MM-DD format.

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Number of stock bought back by the entity at the exercise price or redemption price.

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Organization (Details) $ in Thousands, ft² in Millions			6 Months Ended	12 Months Ended
Organization (Details) $ in Thousands, ft² in Millions	Apr. 01, 2021 shares	Mar. 02, 2021 shares	Jun. 30, 2021 USD ($) ft² Real_Estate_Properties yr shares	Dec. 31, 2020 USD ($) shares	Mar. 31, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Real Estate Properties [Line Items]
Restriction on redemption of OP units from date of issuance (years) \| yr			1
One OP unit is equivalent to one share of Common Stock (in shares) \| shares			1
OP unit conversion rate (in shares) \| shares			1
Number Of series Of preferred units outstanding				1
Cash held in escrows \| $			$ 79,973	$ 50,587		$ 300,608	$ 46,936
Dividends and distributions payable \| $			$ 169,718	$ 171,082		$ 171,077
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
General and limited partnership interest in the operating partnership (percent)			89.90%	90.00%
Commercial Real Estate Properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties \| Real_Estate_Properties			197
Net Rentable Area (in sf) \| ft²			51.5
Total Properties Under Construction [ Member]
Real Estate Properties [Line Items]
Number of real estate properties \| Real_Estate_Properties			9
Net Rentable Area (in sf) \| ft²			4.3
Total Office Properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties \| Real_Estate_Properties			178
Office Properties Under Construction [Member]
Real Estate Properties [Line Items]
Number of real estate properties \| Real_Estate_Properties			9
Retail Properties [ Member]
Real Estate Properties [Line Items]
Number of real estate properties \| Real_Estate_Properties			12
Residential Properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties \| Real_Estate_Properties			6
Hotel Property [ Member]
Real Estate Properties [Line Items]
Number of real estate properties \| Real_Estate_Properties			1
Series B Cumulative Redeemable Preferred Stock / Unit [Member]
Real Estate Properties [Line Items]
Preferred Stock, Dividend Rate, Percentage		5.25%
Preferred stock / units, shares / units outstanding (in shares / units) \| shares		80,000		80,000
Preferred Stock, Redemption Date	Apr. 01, 2021
OP Units for redemption (in shares) \| shares	80,000
Depositary shares of Series B Cumulative Redeemable Preferred [Member]
Real Estate Properties [Line Items]
Preferred stock / units, shares / units outstanding (in shares / units) \| shares				8,000,000
OP Units for redemption (in shares) \| shares	8,000,000
Series B Preferred Units [Member]
Real Estate Properties [Line Items]
Preferred stock / units, shares / units outstanding (in shares / units) \| shares				80,000
Cash held in escrows \| $					$ 201,300
Dividends and distributions payable \| $					$ 1,300