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Commitments and Contingencies - Additional Information (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2017 USD ($) Property ApartmentUnit
Accrual for Environmental Loss Contingencies | $ | $ 5.7
Number of properties with environmental reserves | Property | 2
Loss Contingency Accrual | $ | $ 0.9
Projects in various stages of development | Property | 4
Units in various stages of development | ApartmentUnit | 1,285
Consolidated Project Under Development Commitment Fund | $ | $ 127.3
Various stages of development with estimated completion dates ranging through September 30, 2017 | Sep. 30, 2019
Partially Owned Properties – Unconsolidated |
Number Of Unconsolidated Projects | Property | 2

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- Definition Represents the company's remaining funding obligation (i.e. total project costs less book value) for consolidated projects that are under development. + References No definition available. + Details
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- Definition Total number of open development projects. May include projects that are held for and/or under development, completed and not stabilized or completed and stabilized. These projects are consolidated. + References No definition available. + Details
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- Definition Number of properties with environmental reserves. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition Total number of unconsolidated open development projects. May include projects that are held for and/or under development, completed and not stabilized or completed and stabilized. + References No definition available. + Details
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- Definition Total number of units that are associated with open development projects. May include projects that are held for and/or under development, completed and not stabilized or completed and stabilized. These units are consolidated. + References No definition available. + Details
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- Definition Represents the latest completion date for the current projects under development. + References No definition available. + Details
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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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- Details
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