Segment Reporting Reconciliation of Sales and Operating Data (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Sales and Operating Data from Segment to Consolidated [Line Items]    
Net sales $ 3,797 $ 3,897
Depreciation and Amortization 128 134
Adjusted Operating Income 472 463
Operating income 446 440
Equity income, net of tax 5 7
Net income attributable to noncontrolling interest 16 16
Operating Segments | Electrical / Electronic Architecture    
Sales and Operating Data from Segment to Consolidated [Line Items]    
Net sales 2,078 2,111
Depreciation and Amortization 66 64
Adjusted Operating Income 264 269
Operating income 253 254
Equity income, net of tax 4 6
Net income attributable to noncontrolling interest 8 7
Operating Segments | Powertrain Systems    
Sales and Operating Data from Segment to Consolidated [Line Items]    
Net sales 1,081 1,097
Depreciation and Amortization 44 51
Adjusted Operating Income 129 113
Operating income 121 111
Equity income, net of tax 1 1
Net income attributable to noncontrolling interest 8 9
Operating Segments | Electronics And Safety    
Sales and Operating Data from Segment to Consolidated [Line Items]    
Net sales 682 737
Depreciation and Amortization 18 19
Adjusted Operating Income 79 81
Operating income 72 75
Equity income, net of tax 0 0
Net income attributable to noncontrolling interest 0 0
Intersegment Eliminations | Eliminations And Other    
Sales and Operating Data from Segment to Consolidated [Line Items]    
Net sales (44) [1] (48) [1]
Depreciation and Amortization 0 [1] 0 [1]
Adjusted Operating Income 0 [1] 0 [1]
Operating income 0 [1] 0 [1]
Equity income, net of tax 0 [1] 0 [1]
Net income attributable to noncontrolling interest $ 0 [1] $ 0 [1]
[1] Eliminations and Other includes the elimination of inter-segment transactions.