Debt - Debt Summary (Parenthetical) (Detail) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt	$ 15,666,872	$ 11,905,877
Senior Notes [Member]
Debt Instrument [Line Items]
Debt	13,205,392	9,660,570
Secured Mortgage [Member]
Debt Instrument [Line Items]
Debt	651,346	619,170
Liberty Transaction [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 1,800,000
Liberty Transaction [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Stated interest rate	3.80%
Liberty Transaction [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt	$ 2,500,000
Liberty Transaction [Member] \| Secured Mortgage [Member]
Debt Instrument [Line Items]
Debt	246,900
Liberty Transaction [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt	100,100
Industrial Property Trust Inc Transaction [Member] \| Secured Mortgage [Member] \| Prologis U S Logistics Venture
Debt Instrument [Line Items]
Debt	341,800
GBP
Debt Instrument [Line Items]
Debt	$ 1,077,460	$ 656,549
Percentage of outstanding debt	6.90%	5.50%
CAD
Debt Instrument [Line Items]
Debt	$ 265,791	$ 279,730
Percentage of outstanding debt	1.70%	2.30%
EUR
Debt Instrument [Line Items]
Debt	$ 6,080,521	$ 6,128,986
Percentage of outstanding debt	38.80%	51.50%
JPY
Debt Instrument [Line Items]
Debt	$ 2,480,815	$ 2,329,381
Percentage of outstanding debt	15.80%	19.60%
USD
Debt Instrument [Line Items]
Debt	$ 5,762,285	$ 2,511,231
Percentage of outstanding debt	36.80%	21.10%

Percentage of outstanding debt.

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: 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(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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