Real Estate - Investments in Real Estate Properties (Detail) ft² in Thousands, $ in Thousands	Mar. 31, 2020 USD ($) ft² a Building	Dec. 31, 2019 USD ($) ft² a Building
Real Estate Properties [Line Items]
Total investments in real estate properties	$ 48,112,299	$ 35,224,414
Less accumulated depreciation	5,662,351	5,437,662
Net investments in real estate properties	42,449,948	29,786,752
Improved Land [Member]
Real Estate Properties [Line Items]
Total investments in real estate properties	$ 11,957,756	$ 8,220,208
Building and Improvements [Member]
Real Estate Properties [Line Items]
Square feet of properties \| ft²	439,507	354,297
Number of buildings \| Building	2,260	1,876
Total investments in real estate properties	$ 30,471,635	$ 23,067,625
Development Portfolio, Including Cost of Land: Pre-stabilized [Member]
Real Estate Properties [Line Items]
Square feet of properties \| ft²	6,622	9,133
Number of buildings \| Building	24	28
Total investments in real estate properties	$ 510,338	$ 784,584
Properties Under Development [Member]
Real Estate Properties [Line Items]
Square feet of properties \| ft²	27,617	26,893
Number of buildings \| Building	71	77
Total investments in real estate properties	$ 1,326,456	$ 1,084,683
Land [Member]
Real Estate Properties [Line Items]
Square feet of properties \| a	5,870	4,411
Total investments in real estate properties	$ 1,463,982	$ 1,101,646
Other Real Estate Investments [Member]
Real Estate Properties [Line Items]
Total investments in real estate properties	$ 2,382,132	$ 965,668

Area of a real estate property.

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- Definition

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

+ References

No definition available.

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- Definition

The cumulative amount of depreciation for real estate property held for investment purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(3))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

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- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

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- 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.

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