EQUITY - Reclassifications and Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reclassifications and Taxes Related to Items of Other Comprehensive Income (Loss)
Other comprehensive income (loss)	$ 54	$ (86)
Accumulated Other Comprehensive Income (Loss)
Reclassifications and Taxes Related to Items of Other Comprehensive Income (Loss)
Other comprehensive income (loss), before tax amount	105	(81)
Other comprehensive income (loss), tax (expense) benefit	(50)	(5)
Other comprehensive income (loss)	54	(86)
Foreign Currency Translation Adjustments
Reclassifications and Taxes Related to Items of Other Comprehensive Income (Loss)
Other comprehensive income (loss), before tax amount	(51)	(96)
Other comprehensive income (loss)	(51)	(96)
Unrealized Gains (Losses) on Cash Flow Hedges
Reclassifications and Taxes Related to Items of Other Comprehensive Income (Loss)
Unrealized gains (losses) arising during the period, before tax amount	1
Unrealized gains (losses) arising during the period, net of tax amount	1
Reclassification/amortization, before tax amount	(1)
Reclassification/amortization, net of tax amount	(1)
Net Change Retirement-Related Benefit Plans
Reclassifications and Taxes Related to Items of Other Comprehensive Income (Loss)
Other comprehensive income (loss), before tax amount	156	16
Other comprehensive income (loss), tax (expense) benefit	(50)	(5)
Other comprehensive income (loss)	105	10
Retirement-Related Benefit Plans, Net Gains (Losses)
Reclassifications and Taxes Related to Items of Other Comprehensive Income (Loss)
Unrealized gains (losses) arising during the period, before tax amount	136	5
Unrealized gains (losses) arising during the period, tax (expense) benefit	(45)	(2)
Unrealized gains (losses) arising during the period, net of tax amount	91	3
Reclassification/amortization, before tax amount	16	11
Reclassification/amortization, tax (expense) benefit	(4)	(4)
Reclassification/amortization, net of tax amount	12	$ 7
Retirement-Related Benefit Plans, Curtailments and Settlements
Reclassifications and Taxes Related to Items of Other Comprehensive Income (Loss)
Unrealized gains (losses) arising during the period, before tax amount	4
Unrealized gains (losses) arising during the period, tax (expense) benefit	(1)
Unrealized gains (losses) arising during the period, net of tax amount	$ 3