SENIOR NOTES PAYABLE AND OTHER DEBT - Summary of Senior Notes Payables and Other Debt (Details) $ in Thousands, £ in Millions, $ in Millions	Sep. 30, 2024 USD ($)	Sep. 30, 2024 CAD ($)	Sep. 30, 2024 GBP (£)	Sep. 27, 2024	Sep. 05, 2024	May 13, 2024	May 09, 2024	Apr. 29, 2024	Feb. 29, 2024	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CAD ($)	Dec. 31, 2023 GBP (£)
Debt instruments
Commercial paper notes	$ 0									$ 0
Deferred financing costs, net	(98,717)									(84,034)
Unamortized fair value adjustment	12,086									17,081
Unamortized discounts	(16,518)									(10,749)
Senior notes payable and other debt	13,668,871									13,490,896
Mortgage loans and other	13,772,020									13,568,598
Unsecured revolving credit facility | Revolving Credit Facility
Debt instruments
Fair value of amount outstanding	7,922									14,006
Unsecured revolving credit facility | Revolving Credit Facility | Borrowings Originally Denominated in CAD
Debt instruments
Mortgage loans and other	5,900	$ 8.0									$ 0.0
Unsecured revolving credit facility | Revolving Credit Facility | Borrowings Originally Denominated in GBP
Debt instruments
Mortgage loans and other	$ 2,000		£ 1.5							14,000		£ 11.0
3.50% Senior Notes due 2024
Debt instruments
Interest rate	3.50%	3.50%	3.50%
Senior notes	$ 0									400,000
3.75% Senior Notes due 2024
Debt instruments
Interest rate	3.75%	3.75%	3.75%
Senior notes	$ 0									400,000
4.125% Senior Notes, Series B due 2024
Debt instruments
Interest rate	4.125%	4.125%	4.125%
Senior notes	$ 0									123,256
2.80% Senior Notes, Series E due 2024
Debt instruments
Interest rate	2.80%	2.80%	2.80%
Senior notes	$ 0									55,143
Unsecured Term Loan due 2025
Debt instruments
Unsecured term loan	$ 0									377,501
3.50% Senior Notes due 2025
Debt instruments
Interest rate	3.50%	3.50%	3.50%
Senior notes	$ 600,000									600,000
2.65% Senior Notes due 2025
Debt instruments
Interest rate	2.65%	2.65%	2.65%
Senior notes	$ 450,000									450,000
4.125% Senior Notes due 2026
Debt instruments
Interest rate	4.125%	4.125%	4.125%	4.125%
Senior notes	$ 500,000									500,000
3.25% Senior Notes due 2026
Debt instruments
Interest rate	3.25%	3.25%	3.25%
Senior notes	$ 450,000									450,000
3.75% Exchangeable Senior Notes due 2026
Debt instruments
Interest rate	3.75%	3.75%	3.75%
Senior notes	$ 862,500									862,500
Unsecured term loan due February 2027
Debt instruments
Unsecured term loan	200,000									200,000
Unsecured term loan due June 2027
Debt instruments
Unsecured term loan	$ 500,000									500,000
2.45% Senior Notes, Series G Due 2027
Debt instruments
Interest rate	2.45%	2.45%	2.45%
Senior notes	$ 351,227									358,626
3.85% Senior Notes due 2027
Debt instruments
Interest rate	3.85%	3.85%	3.85%
Senior notes	$ 400,000									400,000
4.00% Senior Notes due 2028
Debt instruments
Interest rate	4.00%	4.00%	4.00%
Senior notes	$ 650,000									650,000
5.398% Senior Notes due 2028
Debt instruments
Interest rate	5.398%	5.398%	5.398%
Senior notes	$ 443,656									453,001
4.40% Senior Notes due 2029
Debt instruments
Interest rate	4.40%	4.40%	4.40%
Senior notes	$ 750,000									750,000
5.10% Senior Notes, Series J due 2029
Debt instruments
Interest rate									5.10%
Senior notes	$ 480,627									0
3.00% Senior Notes due 2030
Debt instruments
Interest rate	3.00%	3.00%	3.00%
Senior notes	$ 650,000									650,000
4.75% Senior Notes due 2030
Debt instruments
Interest rate	4.75%	4.75%	4.75%
Senior notes	$ 500,000									500,000
2.50% Senior Notes due 2031
Debt instruments
Interest rate	2.50%	2.50%	2.50%
Senior notes	$ 500,000									500,000
3.30% Senior Notes, Series H Due 2031
Debt instruments
Interest rate	3.30%	3.30%	3.30%
Senior notes	$ 221,828									226,501
5.63% Senior Notes due 2034
Debt instruments
Interest rate	5.625%	5.625%	5.625%			5.625%
Senior notes	$ 500,000									0
5.00% Senior Notes due 2035
Debt instruments
Interest rate	5.00%	5.00%	5.00%		5.00%
Senior notes	$ 550,000									0
6.90% Senior Notes due 2037
Debt instruments
Interest rate	6.90%	6.90%	6.90%
Senior notes	$ 52,400									52,400
6.59% Senior Notes due 2038
Debt instruments
Interest rate	6.59%	6.59%	6.59%
Senior notes	$ 21,413									21,413
5.70% Senior Notes due 2043
Debt instruments
Interest rate	5.70%	5.70%	5.70%
Senior notes	$ 300,000									300,000
4.375% Senior Notes due 2045
Debt instruments
Interest rate	4.375%	4.375%	4.375%
Senior notes	$ 300,000									300,000
4.875% Senior Notes due 2049
Debt instruments
Interest rate	4.875%	4.875%	4.875%
Senior notes	$ 300,000									300,000
Mortgage loans and other
Debt instruments
Interest rate							6.02%	4.90%	4.644%
Mortgage loans and other	$ 3,230,447									$ 3,174,251