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Discontinued Operations Reconciliation of Major Classes of Profit or Loss of Discontinued Operations (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
 [1]
Jun. 30, 2015
 [1]
Mar. 31, 2015
 [1]
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Income from discontinued operations, net of tax $ (3) $ 54 $ 298 $ (75) $ 6 $ 12 $ 27 $ 15 $ 274 $ 60 $ 60
Income from discontinued operations attributable to Delphi                 262 42 42
Discontinued Operations, Held-for-sale or Disposed of by Sale | Thermal Systems                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Net sales                 914 1,524 1,412
Cost of sales                 828 1,379 1,293
Selling, general and administrative                 27 45 47
Amortization                 1 7 7
Restructuring                 3 4 8
Other income and (expense) items that are not major, net                 0 1 0
Income from discontinued operations before income taxes and equity income                 55 90 57
Income tax expense on discontinued operations                 (10) (27) (16)
Equity income from discontinued operations, net of tax                 (1) (3) 19
Gain (loss) on divestiture of discontinued operations, net of tax                 318 0 0
Impairment loss                 (88) 0 0
Income from discontinued operations, net of tax                 274 60 60
Income from discontinued operations attributable to noncontrolling interests                 12 18 18
Income from discontinued operations attributable to Delphi                 262 42 42
Income from discontinued operations before income taxes attributable to Delphi                 270 65 56
Discontinued Operations, Held-for-sale or Disposed of by Sale | SDAAC | Thermal Systems                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Income tax expense of discontinued operations attributable to noncontrolling interest                 $ 2 $ 4 $ 2
[1] In the first quarter of 2015, Delphi recognized an after-tax impairment loss of $88 million within discontinued operations, in the second quarter of 2015, Delphi recognized an after-tax gain on the divestiture of discontinued operations of $285 million and in the third quarter of 2015, Delphi recognized an after-tax gain on the divestiture of discontinued operations of $47 million.