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SENIOR NOTES PAYABLE AND OTHER DEBT - Summary of Senior Notes Payables and Other Debt (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025	Feb. 29, 2024	Jun. 30, 2023
Debt instruments
Commercial paper notes	$ 65,000,000	$ 0
Deferred financing costs, net	(78,805,000)	(81,529,000)
Unamortized fair value adjustment	6,567,000	6,422,000
Unamortized discounts	(16,613,000)	(17,504,000)
Senior notes payable and other debt	12,518,493,000	13,011,016,000
Mortgage loans and other	12,607,344,000	13,103,627,000
Unsecured revolving credit facility \| Revolving Credit Facility
Debt instruments
Fair value of amount outstanding	0	0
Unsecured revolving credit facility \| Revolving Credit Facility \| Borrowings Originally Denominated in CAD
Debt instruments
Mortgage loans and other	0	0
Unsecured revolving credit facility \| Revolving Credit Facility \| Borrowings Originally Denominated in GBP
Debt instruments
Mortgage loans and other	$ 0	0
4.125% Senior Notes due 2026
Debt instruments
Interest rate	4.125%
Senior notes	$ 0	500,000,000
3.75% Exchangeable Senior Notes due 2026
Debt instruments
Interest rate	3.75%
Senior notes	$ 856,099,000	862,500,000		$ 862,500,000
3.25% Senior Notes due 2026
Debt instruments
Interest rate	3.25%
Senior notes	$ 450,000,000	450,000,000
Unsecured term loan due February 2027
Debt instruments
Unsecured term loan	$ 0	200,000,000
2.45% Senior Notes, Series G Due 2027
Debt instruments
Interest rate	2.45%
Senior notes	$ 341,383,000	346,109,000
3.85% Senior Notes due 2027
Debt instruments
Interest rate	3.85%
Senior notes	$ 400,000,000	400,000,000
4.00% Senior Notes due 2028
Debt instruments
Interest rate	4.00%
Senior notes	$ 650,000,000	650,000,000
5.398% Senior Notes due 2028
Debt instruments
Interest rate	5.398%
Senior notes	$ 431,220,000	437,190,000
4.40% Senior Notes due 2029
Debt instruments
Interest rate	4.40%
Senior notes	$ 750,000,000	750,000,000
5.10% Senior Notes, Series J due 2029
Debt instruments
Interest rate			5.10%
Senior notes	$ 467,155,000	473,623,000
3.00% Senior Notes due 2030
Debt instruments
Interest rate	3.00%
Senior notes	$ 650,000,000	650,000,000
4.75% Senior Notes due 2030
Debt instruments
Interest rate	4.75%
Senior notes	$ 500,000,000	500,000,000
2.50% Senior Notes due 2031
Debt instruments
Interest rate	2.50%
Senior notes	$ 500,000,000	500,000,000
3.30% Senior Notes, Series H Due 2031
Debt instruments
Interest rate	3.30%
Senior notes	$ 215,610,000	218,595,000
Unsecured term loan due January 2031
Debt instruments
Unsecured term loan	$ 700,000,000	500,000,000
5.10% Senior Notes due 2032
Debt instruments
Interest rate	5.10%
Senior notes	$ 500,000,000	500,000,000
5.63% Senior Notes due 2034
Debt instruments
Interest rate	5.625%
Senior notes	$ 500,000,000	500,000,000
5.00% Senior Notes due 2035
Debt instruments
Interest rate	5.00%
Senior notes	$ 550,000,000	550,000,000
5.00% Senior Notes due 2026
Debt instruments
Interest rate	5.00%
Senior notes	$ 500,000,000	500,000,000
6.90% Senior Notes due 2037
Debt instruments
Interest rate	6.90%
Senior notes	$ 52,400,000	52,400,000
6.59% Senior Notes due 2038
Debt instruments
Interest rate	6.59%
Senior notes	$ 21,413,000	21,413,000
5.70% Senior Notes due 2043
Debt instruments
Interest rate	5.70%
Senior notes	$ 300,000,000	300,000,000
4.375% Senior Notes due 2045
Debt instruments
Interest rate	4.375%
Senior notes	$ 300,000,000	300,000,000
4.875% Senior Notes due 2049
Debt instruments
Interest rate	4.875%
Senior notes	$ 300,000,000	300,000,000
Mortgage loans and other
Debt instruments
Mortgage loans and other	$ 2,607,064,000	$ 2,641,797,000