RETIREMENT BENEFITS PLANS - Changes in Pension and Other Postretirement Liabilities Recognized in AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Pension plans | United States
Changes in pension and other postretirement benefit liabilities recognized in Accumulated other comprehensive loss
Balance at January 1	$ 811	$ 713
Prior service cost arising during the year	1	1
Net loss (gain) arising during the year	97	173
Currency translation	0	0
Less amounts included in expense during the year	(38)	(76)
Net change for the year	60	98
Balance at December 31	871	811
Pension plans | Non-United States plans
Changes in pension and other postretirement benefit liabilities recognized in Accumulated other comprehensive loss
Balance at January 1	505	763
Prior service cost arising during the year	(1)	1
Net loss (gain) arising during the year	139	(149)
Currency translation	29	(64)
Less amounts included in expense during the year	(11)	(47)
Net change for the year	156	(259)
Balance at December 31	661	505
Other postretirement benefits plans
Changes in pension and other postretirement benefit liabilities recognized in Accumulated other comprehensive loss
Balance at January 1	(120)	(55)
Prior service cost arising during the year	0	(2)
Net loss (gain) arising during the year	10	(69)
Currency translation	0	(1)
Less amounts included in expense during the year	17	7
Net change for the year	27	(65)
Balance at December 31	$ (93)	$ (120)