Limited Partners Capital Account, Units Split, Conversion Ratio

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Percentage Of Outstanding Common Shares Distributed

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Area of a real estate property.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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-Name Accounting Standards Codification
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- Definition

The number of limited partner units issued.

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The number of limited partner units outstanding.

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- Definition

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

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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The number of units in a real estate property owned as of the balance sheet date.

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The amount of a reclassification adjustment made to prior period financial statement amounts.

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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.

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Organization and Basis of Presentation and Combination - Narrative (Details) shares in Millions, $ in Millions				6 Months Ended	12 Months Ended
	Jul. 18, 2017 ft² building_unit properties shares	Jul. 17, 2017 shares	Jul. 07, 2017	Jun. 30, 2017 segment	Dec. 31, 2016 USD ($)
Real Estate Properties [Line Items]
Number of reportable segments \| segment				2
Other Assets
Real Estate Properties [Line Items]
Prior period reclassification adjustment \| $					$ 4.0
Subsequent Event
Real Estate Properties [Line Items]
Common stock issued (in shares) \| shares		94.7
Common limited partnership units (in shares) \| shares		5.8
Common shares outstanding (in shares) \| shares	118.2
Common limited partnership units outstanding (in shares) \| shares	19.5
Number of real estate properties \| properties	68
Subsequent Event \| Asset under Construction
Real Estate Properties [Line Items]
Number of real estate properties \| properties	11
Subsequent Event \| Near-Term Development
Real Estate Properties [Line Items]
Number of real estate properties \| properties	2
Subsequent Event \| Future Development
Real Estate Properties [Line Items]
Number of real estate properties \| properties	44
Area of real estate property (in square feet)	22,000,000
Subsequent Event \| Office Building
Real Estate Properties [Line Items]
Number of real estate properties \| properties	50
Area of real estate property (in square feet)	13,900,000
Subsequent Event \| Office Building \| Asset under Construction
Real Estate Properties [Line Items]
Number of real estate properties \| properties	5
Area of real estate property (in square feet)	1,300,000
Subsequent Event \| Multifamily
Real Estate Properties [Line Items]
Number of real estate properties \| properties	14
Number of building units \| building_unit	6,016
Subsequent Event \| Multifamily \| Asset under Construction
Real Estate Properties [Line Items]
Number of real estate properties \| properties	6
Number of building units \| building_unit	1,334
Subsequent Event \| Multifamily \| Near-Term Development
Real Estate Properties [Line Items]
Number of real estate properties \| properties	1
Number of building units \| building_unit	433
Subsequent Event \| Other Property
Real Estate Properties [Line Items]
Number of real estate properties \| properties	4
Area of real estate property (in square feet)	765,000
Subsequent Event \| Other Property \| Near-Term Development
Real Estate Properties [Line Items]
Number of real estate properties \| properties	1
Area of real estate property (in square feet)	65,000
Subsequent Event \| Wholly Owned Properties \| Future Development
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	18,300,000
Subsequent Event \| Wholly Owned Properties \| Office Building
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	11,900,000
Subsequent Event \| Wholly Owned Properties \| Office Building \| Asset under Construction
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	1,200,000
Subsequent Event \| Wholly Owned Properties \| Multifamily
Real Estate Properties [Line Items]
Number of building units \| building_unit	4,232
Subsequent Event \| Wholly Owned Properties \| Multifamily \| Asset under Construction
Real Estate Properties [Line Items]
Number of building units \| building_unit	1,146
Subsequent Event \| Wholly Owned Properties \| Multifamily \| Near-Term Development
Real Estate Properties [Line Items]
Number of building units \| building_unit	303
Subsequent Event \| Wholly Owned Properties \| Other Property
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	348,000
Subsequent Event \| Wholly Owned Properties \| Other Property \| Near-Term Development
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	6,500
Subsequent Event \| JBG Companies
Real Estate Properties [Line Items]
Equity interest issued for acquisition (in shares) \| shares	37.2
Number of real estate properties \| properties	30
Subsequent Event \| JBG Companies \| Asset under Construction
Real Estate Properties [Line Items]
Number of real estate properties \| properties	11
Area of real estate property (in square feet)	2,500,000
Subsequent Event \| JBG Companies \| Near-Term Development
Real Estate Properties [Line Items]
Number of real estate properties \| properties	2
Area of real estate property (in square feet)	401,000
Subsequent Event \| JBG Companies \| Future Development
Real Estate Properties [Line Items]
Number of real estate properties \| properties	26
Area of real estate property (in square feet)	11,700,000
Subsequent Event \| JBG Companies \| Office Building
Real Estate Properties [Line Items]
Number of real estate properties \| properties	19
Area of real estate property (in square feet)	3,600,000
Subsequent Event \| JBG Companies \| Multifamily
Real Estate Properties [Line Items]
Number of real estate properties \| properties	9
Number of building units \| building_unit	2,883
Subsequent Event \| JBG Companies \| Other Property
Real Estate Properties [Line Items]
Number of real estate properties \| properties	2
Area of real estate property (in square feet)	490,000
Subsequent Event \| JBG Companies \| Wholly Owned Properties \| Asset under Construction
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	2,200,000
Subsequent Event \| JBG Companies \| Wholly Owned Properties \| Near-Term Development
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	242,000
Subsequent Event \| JBG Companies \| Wholly Owned Properties \| Future Development
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	8,500,000
Subsequent Event \| JBG Companies \| Wholly Owned Properties \| Office Building
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	2,300,000
Subsequent Event \| JBG Companies \| Wholly Owned Properties \| Multifamily
Real Estate Properties [Line Items]
Number of building units \| building_unit	1,099
Subsequent Event \| JBG Companies \| Wholly Owned Properties \| Other Property
Real Estate Properties [Line Items]
Area of real estate property (in square feet)	73,000
Subsequent Event \| JBG Companies \| Common stock
Real Estate Properties [Line Items]
Equity interest issued for acquisition (in shares) \| shares	23.5
Subsequent Event \| JBG Companies \| Partnership units
Real Estate Properties [Line Items]
Equity interest issued for acquisition (in shares) \| shares	13.7
Subsequent Event \| Affiliate \| Vornado
Real Estate Properties [Line Items]
Percentage of common shares distributed		100.00%
Spinoff ratio			0.5
Limited Partners spinoff ratio			0.5