FAIR VALUE OF FINANCIAL INSTRUMENTS - Amortized Cost for which Fair Value is Disclosed (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	$ 285,251	$ 287,864
Not measured at fair value in statement of financial position but for which fair value is disclosed | Corporate borrowings | Level 1
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	13,408	11,280
Not measured at fair value in statement of financial position but for which fair value is disclosed | Corporate borrowings | Level 2
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	63	70
Not measured at fair value in statement of financial position but for which fair value is disclosed | Corporate borrowings | Level 3
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	0	0
Not measured at fair value in statement of financial position but for which fair value is disclosed | Property-specific borrowings | Level 1
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	8,986	8,526
Not measured at fair value in statement of financial position but for which fair value is disclosed | Property-specific borrowings | Level 2
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	123,385	108,076
Not measured at fair value in statement of financial position but for which fair value is disclosed | Property-specific borrowings | Level 3
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	72,131	88,401
Not measured at fair value in statement of financial position but for which fair value is disclosed | Subsidiary borrowings | Level 1
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	7,715	7,527
Not measured at fair value in statement of financial position but for which fair value is disclosed | Subsidiary borrowings | Level 2
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	671	0
Not measured at fair value in statement of financial position but for which fair value is disclosed | Subsidiary borrowings | Level 3
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	7,690	8,503
Not measured at fair value in statement of financial position but for which fair value is disclosed | Subsidiary equity obligations | Level 1
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	0	0
Not measured at fair value in statement of financial position but for which fair value is disclosed | Subsidiary equity obligations | Level 2
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	0	1,211
Not measured at fair value in statement of financial position but for which fair value is disclosed | Subsidiary equity obligations | Level 3
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	$ 4,630	$ 2,671