RETIREMENT BENEFITS - Net (Benefit) Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
U.S. Plans | Pension Plans
Service-related expense
Benefits earned during the period	$ 0	$ 0	$ 0	$ 0
Interest cost on benefit obligation	120	87	311	264
Expected return on plan assets	(153)	(173)	(461)	(529)
Amortization of unrecognized:
Prior service cost (benefit)	0	0	1	1
Net actuarial loss (gain)	36	57	136	173
Curtailment (gain)			0	0
Settlement (gain) loss	0	0	0	0
Total net expense	3	(29)	(13)	(91)
U.S. Plans | Postretirement Benefit Plans
Service-related expense
Benefits earned during the period	0	0	0	0
Interest cost on benefit obligation	4	3	11	9
Expected return on plan assets	(3)	(3)	(9)	(10)
Amortization of unrecognized:
Prior service cost (benefit)	(2)	(3)	(7)	(7)
Net actuarial loss (gain)	(2)	0	(5)	(1)
Curtailment (gain)			0	0
Settlement (gain) loss	0	0	0	0
Total net expense	(3)	(3)	(10)	(9)
Non-U.S. plans | Pension Plans
Service-related expense
Benefits earned during the period	26	36	90	113
Interest cost on benefit obligation	91	67	243	199
Expected return on plan assets	(64)	(65)	(196)	(189)
Amortization of unrecognized:
Prior service cost (benefit)	(2)	(1)	(5)	(4)
Net actuarial loss (gain)	16	16	43	48
Curtailment (gain)			(23)	0
Settlement (gain) loss	0	1	(10)	5
Total net expense	67	54	142	172
Non-U.S. plans | Pension Plans | Consumer
Amortization of unrecognized:
Total net expense			36
Non-U.S. plans | Postretirement Benefit Plans
Service-related expense
Benefits earned during the period	1	2	2	6
Interest cost on benefit obligation	21	25	67	74
Expected return on plan assets	(16)	(22)	(54)	(65)
Amortization of unrecognized:
Prior service cost (benefit)	(2)	(2)	(6)	(7)
Net actuarial loss (gain)	2	4	4	12
Curtailment (gain)			0	0
Settlement (gain) loss	0	0	0	0
Total net expense	$ 6	$ 7	$ 13	$ 20