RETIREMENT BENEFIT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2017
United States pension benefit expense
Retirement benefits plans expense
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 370
Pension plan | United States pension benefit expense
Retirement benefits plans expense
Service cost	$ 24	$ 28	72	$ 83
Interest cost	30	31	92	94
Expected return on plan assets	(61)	(63)	(183)	(188)
Amortization	21	23	62	69
Total	14	19	43	58
Settlements and other	17	24	51	63
Total expense	31	43	94	121
Pension plan | Non-United States pension benefit expense
Retirement benefits plans expense
Service cost	18	16	53	49
Interest cost	14	16	41	48
Expected return on plan assets	(24)	(23)	(70)	(71)
Amortization	13	8	38	25
Total	21	17	62	51
Settlements and other	4	0	4	0
Total expense	25	17	66	51
Other postretirement benefits expense
Retirement benefits plans expense
Service cost	1	1	2	3
Interest cost	4	4	11	13
Expected return on plan assets	(1)	(2)	(3)	(5)
Amortization	(3)	(2)	(9)	(6)
Total	1	1	1	5
Settlements and other	0	0	0	0
Total expense	$ 1	$ 1	$ 1	$ 5
Scenario, Forecast [Member] | United States pension benefit expense
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year, Description					375