PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Schedule of Other Changes in Plan Assets and Benefit Obligations Recognized in OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Current year actuarial loss / (gain)	$ 54	$ (56)	$ 78
Current year prior service cost (credit)	(5)	0	(156)
Total recognized in other comprehensive income (loss) (pre-tax)	$ 27	$ (104)	$ (171)
Amortization of actuarial losses (in years)	20 years
Amortization of prior service credit (in years)	13 years
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Current year actuarial loss / (gain)	$ (28)
Actuarial (loss) recognized during the year	0
Current year prior service cost (credit)	(5)
Prior service credit (cost) recognized during the year	46
Total recognized in other comprehensive income (loss) (pre-tax)	13
Total recognized in net periodic benefit costs and other comprehensive income (loss) (pre-tax)	(27)
United States Pension Benefits | Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Current year actuarial loss / (gain)	145
Actuarial (loss) recognized during the year	(58)
Current year prior service cost (credit)	0
Prior service credit (cost) recognized during the year	0
Total recognized in other comprehensive income (loss) (pre-tax)	87
Total recognized in net periodic benefit costs and other comprehensive income (loss) (pre-tax)	86
Foreign Pension Benefits | Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Current year actuarial loss / (gain)	(63)
Actuarial (loss) recognized during the year	(10)
Current year prior service cost (credit)	0
Prior service credit (cost) recognized during the year	0
Total recognized in other comprehensive income (loss) (pre-tax)	(73)
Total recognized in net periodic benefit costs and other comprehensive income (loss) (pre-tax)	$ (75)