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Debt - Debt Summary (Parenthetical) (Detail)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 29, 2020
USD ($)
Dec. 31, 2020
USD ($)
Property
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]      
Weighted Average Interest Rate   1.90% 2.20%
Debt   $ 16,849,076 $ 11,905,877
Number of operating properties securing mortgage debt of consolidated entities | Property   85  
Number of prestablized properties securing mortgage debt of consolidated entities | Property   1  
Mortgage notes, aggregate cost of secured properties   $ 1,600,000  
Senior Notes [Member]      
Debt Instrument [Line Items]      
Weighted Average Interest Rate   2.00% 2.40%
Debt   $ 14,275,870 $ 9,660,570
Senior Notes [Member] | Minimum [Member]      
Debt Instrument [Line Items]      
Effective Interest Rate   0.20%  
Debt instrument, maturity date   2022-02  
Senior Notes [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Effective Interest Rate   4.50%  
Debt instrument, maturity date   2050-10  
Secured Mortgage [Member]      
Debt Instrument [Line Items]      
Weighted Average Interest Rate   3.10% 3.40%
Debt   $ 637,101 $ 619,170
Secured Mortgage [Member] | Minimum [Member]      
Debt Instrument [Line Items]      
Effective Interest Rate   0.20%  
Debt instrument, maturity date   2021-01  
Secured Mortgage [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Effective Interest Rate   7.80%  
Debt instrument, maturity date   2027-11  
Liberty Transaction [Member]      
Debt Instrument [Line Items]      
Repayments of debt $ 1,800,000    
Liberty Transaction [Member] | Weighted Average [Member]      
Debt Instrument [Line Items]      
Weighted average 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 [Member]      
Debt Instrument [Line Items]      
Debt   $ 341,800  
GBP      
Debt Instrument [Line Items]      
Weighted Average Interest Rate   2.20% 2.30%
Debt   $ 1,019,480 $ 656,549
Percentage of outstanding debt   6.10% 5.50%
CAD      
Debt Instrument [Line Items]      
Weighted Average Interest Rate   2.70% 3.40%
Debt   $ 285,708 $ 279,730
Percentage of outstanding debt   1.70% 2.30%
EUR      
Debt Instrument [Line Items]      
Weighted Average Interest Rate   1.40% 1.90%
Debt   $ 6,549,676 $ 6,128,986
Percentage of outstanding debt   38.80% 51.50%
JPY      
Debt Instrument [Line Items]      
Weighted Average Interest Rate   0.80% 0.70%
Debt   $ 2,877,247 $ 2,329,381
Percentage of outstanding debt   17.10% 19.60%
USD      
Debt Instrument [Line Items]      
Weighted Average Interest Rate   2.80% 4.40%
Debt   $ 6,116,965 $ 2,511,231
Percentage of outstanding debt   36.30% 21.10%