Disclosure about Fair Value of Financial Instruments - Summary of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financial assets:
Restricted cash	$ 115,518	$ 175,861	[1]
Financial liabilities:
Foreign currency forward contracts, interest rate swaps and cross currency swaps	62,897
Carrying Amount
Financial assets:
Investments in sales-type leases, net	57,800	497,963
Cash and cash equivalents	4,703,775	5,033,678
Restricted cash	115,518	175,861
Foreign currency forward contracts, interest rate swaps and cross currency swaps	93,264	43,223
Financial liabilities:
Senior unsecured notes	15,159,712	16,383,522
Secured debt	2,773,856	2,813,780
Foreign currency forward contracts, interest rate swaps and cross currency swaps	156,161	416,210
Redeemable DownREIT Unitholder interests	0	72,497
Carrying Amount | Mortgage loans receivable
Financial assets:
Loans receivable, fair value	1,614,337	998,699
Carrying Amount | Other real estate loans receivable
Financial assets:
Loans receivable, fair value	953,227	832,511
Carrying Amount | Non-real estate loans receivable
Financial assets:
Loans receivable, fair value	284,206	251,055
Fair Value
Financial assets:
Investments in sales-type leases, net	57,800	497,963
Cash and cash equivalents	4,703,775	5,033,678
Restricted cash	115,518	175,861
Foreign currency forward contracts, interest rate swaps and cross currency swaps	93,264	43,223
Financial liabilities:
Senior unsecured notes	16,674,239	17,872,001
Secured debt	2,741,154	2,768,807
Foreign currency forward contracts, interest rate swaps and cross currency swaps	156,161	416,210
Redeemable DownREIT Unitholder interests	0	72,497
Fair Value | Mortgage loans receivable
Financial assets:
Loans receivable, fair value	1,628,885	1,008,879
Fair Value | Other real estate loans receivable
Financial assets:
Loans receivable, fair value	912,099	803,247
Fair Value | Non-real estate loans receivable
Financial assets:
Loans receivable, fair value	$ 280,649	$ 245,415

[1] The consolidated balance sheet at December 31, 2025 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.