Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restructuring Restructuring Costs by Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 65	$ 52	$ 109	$ 129	$ 167
Signal and Power Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring			90	67	125
Advanced Safety and User Experience
Restructuring Cost and Reserve [Line Items]
Restructuring			$ 19	$ 62	$ 42