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Schedule III - Real Estate and Accumulated Depreciation - Reconciliation of Carrying Amount of Real Estate Investments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]
Balance, beginning of period	$ 16,927,332	$ 15,020,198	$ 12,947,735
ASC 842 adoption impact	0	(276,671)	0
Additions (including acquisitions and improvements)	3,110,907	2,632,472	2,756,218
Disposals	(446,864)	(463,485)	(289,157)
Foreign currency transaction adjustments and others	570,410	14,818	(394,598)
Balance, end of year	$ 20,161,785	$ 16,927,332	$ 15,020,198

X

- Definition

Investment in Real Estate, New Accounting Pronouncement Effect

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

SEC Schedule III, Real Estate, Acquisitions and Improvements

+ References

No definition available.

+ Details

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X

- Definition

SEC Schedule III, Real Estate, Foreign Currency Translation Adjustments and Others

+ References

No definition available.

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X

- Definition

Amount of real estate investments sold for entities with a substantial portion of business acquiring and holding investment real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28(Footnote 4))
-URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024

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X

- Definition

Amount, before accumulated depreciation, of real estate investment by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. Excludes real estate not held as investment or interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28(Column E))
-URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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