RETIREMENT BENEFIT PLANS - Net Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pension benefits | US
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	1	1	2	4
Expected return on plan assets	(2)	(2)	(7)	(7)
Amortization of unrecognized prior service credit	(1)	(1)	(1)	(1)
Amortization of unrecognized loss	2	1	3	2
Net periodic benefit (income) cost	0	(1)	(3)	(2)
Pension benefits | Non-US
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	5	19	15
Interest cost	8	2	23	7
Expected return on plan assets	(20)	(6)	(62)	(18)
Amortization of unrecognized prior service credit	0	0	0	0
Amortization of unrecognized loss	3	3	10	8
Net periodic benefit (income) cost	(3)	4	(10)	12
Other postretirement employee benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	0	0	0	1
Expected return on plan assets	0	0	0	0
Amortization of unrecognized prior service credit	(1)	(1)	(2)	(2)
Amortization of unrecognized loss	0	1	1	1
Net periodic benefit (income) cost	$ (1)	$ 0	$ (1)	$ 0