FAIR VALUE OF FINANCIAL INSTRUMENTS - Amortized Cost for which Fair Value is Disclosed (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Disclosure of fair value measurement of liabilities [line items]
Financial liabilities	$ 287,864	$ 266,821
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	11,280	9,524
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	70	75
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	8,526	6,742
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	108,076	87,764
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	88,401	89,748
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	7,527	7,547
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	0	2,100
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	8,503	5,061
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	1,211	689
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	$ 2,671	$ 2,385