REVENUE RECOGNITION - Schedule of Disaggregation of Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 5,533	$ 5,487	$ 10,838	$ 10,738
Electrical Products
Disaggregation of Revenue [Line Items]
Net sales	1,849	1,806	3,609	3,538
Electrical Products | United States
Disaggregation of Revenue [Line Items]
Net sales	1,115	1,033	2,162	1,993
Electrical Products | Rest of World
Disaggregation of Revenue [Line Items]
Net sales	734	773	1,447	1,545
Electrical Systems and Services
Disaggregation of Revenue [Line Items]
Net sales	1,582	1,513	3,046	2,894
Electrical Systems and Services | United States
Disaggregation of Revenue [Line Items]
Net sales	1,049	983	2,025	1,877
Electrical Systems and Services | Rest of World
Disaggregation of Revenue [Line Items]
Net sales	533	530	1,021	1,017
Hydraulics
Disaggregation of Revenue [Line Items]
Net sales	698	723	1,384	1,433
Hydraulics | United States
Disaggregation of Revenue [Line Items]
Net sales	306	309	596	606
Hydraulics | Rest of World
Disaggregation of Revenue [Line Items]
Net sales	392	414	788	827
Aerospace
Disaggregation of Revenue [Line Items]
Net sales	517	463	1,019	921
Aerospace | Original Equipment Manufacturers
Disaggregation of Revenue [Line Items]
Net sales	299	266	586	530
Aerospace | Aftermarket, Distribution and End User
Disaggregation of Revenue [Line Items]
Net sales	218	197	433	391
Vehicle
Disaggregation of Revenue [Line Items]
Net sales	803	899	1,613	1,792
Vehicle | Commercial
Disaggregation of Revenue [Line Items]
Net sales	425	452	856	882
Vehicle | Passenger and Light Duty
Disaggregation of Revenue [Line Items]
Net sales	378	447	757	910
eMobility
Disaggregation of Revenue [Line Items]
Net sales	$ 84	$ 83	$ 167	$ 160