Sale Price Of Sold Property

No definition available.

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Namespace Prefix:	bxp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of gain (loss) on sale of properties during the reporting period gross of the applicable income taxes realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 974
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-15.(a)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6875705&loc=d3e641549-123027

+ Details

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Period Type:	duration

- Definition

Net rentable area for properties owned.

+ References

No definition available.

+ Details

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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.

+ Details

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Details

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- Details

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Namespace Prefix:
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Real Estate Activity During the Three Months Ended March 31, 2016 (Narrative) (Details) $ in Thousands			1 Months Ended	3 Months Ended
	Feb. 03, 2016 USD ($) ft²	Feb. 01, 2016 USD ($) ft²	Jan. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)
Real Estate Properties [Line Items]
Net income				$ 250,353	$ 206,209
Proceeds from sales of real estate				104,816	194,821
Gains on sales of real estate				67,623	95,084
Revenues				665,985	618,476
415 Main Street [Member]
Real Estate Properties [Line Items]
Net income			$ 1,200		2,600
Sale Price Of Sold Property		$ 105,400
Proceeds from sales of real estate		$ 104,900
Net Rentable Area (in sf) \| ft²		231,000
Terminated lease at 250 West 55thStreet in NYC [Member]
Real Estate Properties [Line Items]
Net Rentable Area (in sf) \| ft²	85,000
Revenues	$ 45,000
Boston Properties Inc \| 415 Main Street [Member]
Real Estate Properties [Line Items]
Gains on sales of real estate		$ 60,800
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
Net income				252,340	208,208
Proceeds from sales of real estate				104,816	194,821
Gains on sales of real estate				69,792	95,084
Revenues				$ 665,985	$ 618,476
Boston Properties Limited Partnership \| 415 Main Street [Member]
Real Estate Properties [Line Items]
Gains on sales of real estate		$ 63,000