INCOME TAXES - Tax Credit Carryforward and Expiration Dates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Loss and Tax Carryforwards
Net DFA	$ 29,608	$ 27,672
U.S. Federal and New York State and City NOL carryforward period	20 years
U.S. foreign tax credit carryforward period (in years)	10 years
Limit on utilization of foreign tax credit carryforwards (as percent)	21.00%
Domestic losses allowed to be reclassified as foreign source income	$ 7,000
Foreign
Operating Loss and Tax Carryforwards
Operating loss carryforward	1,400	1,100
Net DFA	3,300	2,900
U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	5,600	5,200
Operating loss carryforward	15,900	15,800
FTC
Operating Loss and Tax Carryforwards
Net DFA	22,100	20,500
Foreign tax credits (FTCs)	1,200	1,900
Gross foreign tax credits	3,100	2,800
2027 | U.S. federal
Operating Loss and Tax Carryforwards
Operating loss carryforward	100	100
2028 | U.S. federal
Operating Loss and Tax Carryforwards
Operating loss carryforward	100	100
2030 | U.S. federal
Operating Loss and Tax Carryforwards
Operating loss carryforward	300	300
2032 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	400	400
2033 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	300	300
Operating loss carryforward	1,700	1,600
2034 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	200	200
Operating loss carryforward	1,900	2,000
2034 | New York State
Operating Loss and Tax Carryforwards
Operating loss carryforward	9,900	11,500
2034 | New York City
Operating Loss and Tax Carryforwards
Operating loss carryforward	8,700	10,300
2035 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	200	200
Operating loss carryforward	3,300	3,300
2036 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	200	200
Operating loss carryforward	2,100	2,100
2037 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	500	500
Operating loss carryforward	1,000	1,000
2038 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	500	500
2039 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	700	700
2040 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	700	700
2041 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	800	800
2042 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	700	700
2043 | U.S. federal
Operating Loss and Tax Carryforwards
Tax credit carryforward	400	0
Unlimited carry-forward period | U.S. federal
Operating Loss and Tax Carryforwards
Operating loss carryforward	$ 5,400	5,300
Minimum
Operating Loss and Tax Carryforwards
Limit on domestic losses to be reclassified as foreign source income (as a percent)	50.00%
Maximum
Operating Loss and Tax Carryforwards
Limit on domestic losses to be reclassified as foreign source income (as a percent)	100.00%
General Basket | Foreign
Operating Loss and Tax Carryforwards
Tax credit carryforward	$ 1,200	1,900
General Basket | 2025 | Foreign
Operating Loss and Tax Carryforwards
Tax credit carryforward	100	800
General Basket | 2027 | Foreign
Operating Loss and Tax Carryforwards
Tax credit carryforward	1,100	1,100
Branch Basket | Foreign
Operating Loss and Tax Carryforwards
Tax credit carryforward	1,900	900
Branch Basket | 2028 | Foreign
Operating Loss and Tax Carryforwards
Tax credit carryforward	700	700
Branch Basket | 2029 | Foreign
Operating Loss and Tax Carryforwards
Tax credit carryforward	200	200
Branch Basket | 2033 | Foreign
Operating Loss and Tax Carryforwards
Tax credit carryforward	$ 1,000	$ 0