RESTRUCTURING - Narratives (Details) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($) employee	Dec. 31, 2020 USD ($) employee	Dec. 31, 2019 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net		$ 50	$ 163	$ 203	$ 72
2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			103	$ 148
Restructuring cost, incurred to date			251
Restructuring and related plan			300
Delphi Technologies Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net	$ 54		60
Restructuring cost, incurred to date			$ 62
Air Management
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee			140	200	130
Professional Fees Employee Termination and Relocation Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net					$ 18
Professional Fees Employee Termination and Relocation Costs | Air Management
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net					18
One-time Termination Benefits | Air Management
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			$ 23	$ 27	37
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			99	157
Employee termination benefits | Air Management
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			4	$ 19	$ 5
Number of positions eliminated | employee				200
Severance And Professional Fees | Air Management
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			25	$ 33
Severance And Professional Fees | e-Propulsion & Drivetrain
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			19	15
Contractual Settlements, Professional Fees And Other Costs | e-Propulsion & Drivetrain
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			$ 35
Facility Closing | e-Propulsion & Drivetrain
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net				$ 55
Facility Closing | e-Propulsion & Drivetrain | Europe
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee				350