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v3.19.3.a.u2

Summary of Significant Accounting Policies - Additional Information (Details) | 12 Months Ended |
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Dec. 31, 2019 USD ($) Property ApartmentUnit $ / shares | Dec. 31, 2018 USD ($) $ / shares | Dec. 31, 2017 USD ($) $ / shares | Jan. 01, 2019 USD ($)
Value of furniture and fixtures minimum range | $ 10,000 |  |  |
Value of furniture and fixtures maximum range | $ 35,000 |  |  |
Lease intangibles, average term | 6 months |  |  |
Capitalized costs development and renovation | $ 14,200,000 | $ 13,200,000 | $ 14,700,000 |
Lessee, finance lease, description | The Company is a lessor for its residential and retail leases and is a lessee for its corporate headquarters and regional offices and ground leases for land underlying current operating properties or projects under development. If applicable, lease agreements must be evaluated to determine the accounting treatment as a finance or operating lease in accordance with the new leasing standard. A lease is classified as a finance lease if it meets any of the following criteria: (a) Ownership of the underlying asset is transferred to the lessee by the end of the lease term; (b) the lessee has and is reasonably certain to exercise an option to purchase the underlying asset; (c) the lease term is for the major part of the remaining economic life of the underlying asset; (d) the present value of future minimum lease payments is equal to substantially all of the fair value of the underlying asset; and (e) the underlying asset is expected to have no alternative use to the lessor at the end of the lease term due to its specialized nature. |  |  |
Lessee, finance lease residual value guarantee, description | the present value of future minimum lease payments is equal to substantially all of the fair value of the underlying asset |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares | $ 0.01 | $ 0.01 | $ 0.01 |
Land and depreciable property net | $ 13,700,000,000 | $ 14,000,000,000.0 |  |
Right-of-use assets | 512,774,000 |  |  | $ 434,201,000
Lease liabilities | $ 331,334,000 |  |  | $ 278,287,000
Properties | Property | 309 |  |  |
Noncontrolling Interests – Partially Owned Properties | $ 1,183,000 | $ (2,293,000) |  |
Apartment units | ApartmentUnit | 79,962 |  |  |
Partially Owned Properties – Consolidated |  |  |  |
Properties | Property | 17 |  |  |
Noncontrolling Interests – Partially Owned Properties | $ 1,200,000 |  |  |
Apartment units | ApartmentUnit | 3,535 |  |  |
Limited Life Partnership Properties [Member] |  |  |  |
Properties | Property | 4 |  |  |
Noncontrolling Interests – Partially Owned Properties | $ 10,200,000 |  |  |
Noncontrolling interests settlement value | $ 78,900,000 |  |  |
Minimum [Member] | Retail Commercial Leases [Member] |  |  |  |
Retail leases term | 5 years |  |  |
Maximum [Member] | Retail Commercial Leases [Member] |  |  |  |
Retail leases term | 10 years |  |  |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |  |
Property, plant and equipment, estimated useful lives | 5 years |  |  |
Furniture and Fixtures [Member] | Maximum [Member] |  |  |  |
Property, plant and equipment, estimated useful lives | 10 years |  |  |
Building [Member] |  |  |  |
Property, plant and equipment, estimated useful lives | 30 years |  |  |
Replacements [Member] | Minimum [Member] |  |  |  |
Property, plant and equipment, estimated useful lives | 5 years |  |  |
Replacements [Member] | Maximum [Member] |  |  |  |
Property, plant and equipment, estimated useful lives | 10 years |  |  |
Renovations and Improvements Minimum [Member] | Minimum [Member] |  |  |  |
Property, plant and equipment, estimated useful lives | 5 years |  |  |
Renovations and Improvements Minimum [Member] | Maximum [Member] |  |  |  |
Property, plant and equipment, estimated useful lives | 15 years |  |  |

X
- Definition Represents payroll and associated costs of employees directly responsible for and who spend their time on the supervision of development activities as well as major capital and/or renovation projects that are capitalized on the balance sheet + References No definition available. + Details
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- Definition Represents the value of Noncontrolling Interest distributions had the Company's partnership agreements been liquidated through the sale of their assets upon reaching the date specified in each respective partnership agreement. The Company, as controlling partner, has an obligation to cause the property owning partnerships to distribute the proceeds of liquidation to the Noncontrolling Interests in these Partially Owned Properties. + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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