Restructuring Restructuring Costs by Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 154	$ 108	$ 328	$ 177	$ 140
Electrical / Electronic Architecture
Restructuring Cost and Reserve [Line Items]
Restructuring			117	37	57
Powertrain Systems
Restructuring Cost and Reserve [Line Items]
Restructuring			172	115	55
Electronics And Safety
Restructuring Cost and Reserve [Line Items]
Restructuring			$ 39	$ 25	$ 28