Area of a real estate property.

No definition available.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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Subsequent events (Details) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2020 USD ($) ft²	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($)	Jan. 06, 2020 $ / shares shares
Subsequent Event [Line Items]
Purchase Price \| $		$ 2,259,778	$ 1,037,180	$ 675,584
Shares of common stock authorized \| shares		200,000,000.0	200,000,000
Subsequent Event
Subsequent Event [Line Items]
Purchase Price \| $	$ 341,200
Area of Real Estate Property	800,346
Forward Equity Sales Agreements Entered in January 2020 \| Subsequent Event
Subsequent Event [Line Items]
Shares of common stock authorized \| shares					6,900,000
Weighted average price per share \| $ / shares					$ 155.00
BXP Gateway \| Subsequent Event
Subsequent Event [Line Items]
Area of Real Estate Property	1,700,000
Equity interest percentage (in percent)	51.00%
BXP Gateway - 601, 611, 651 Gateway Boulevard \| Subsequent Event
Subsequent Event [Line Items]
Area of Real Estate Property	260,000
BXP Gateway - 681, 701, 751 Gateway Boulevard \| Subsequent Event
Subsequent Event [Line Items]
Area of Real Estate Property	377,000