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Income Taxes (Details) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 30, 2019 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Tax benefit on nontaxable gain from derecognition of subsidiary | $ 37 |  |  |  |  |  |  |  |  |  |  |
Gain on derecognition of subsidiary | 177 |  |  |  |  |  |  |  |  | $ 177 | $ 0 | $ 0
Earnings before income taxes and the provision for income taxes |  |  |  |  |  |  |  |  |  |  |  |
Earnings before income taxes - U.S. |  |  |  |  |  |  |  |  |  | 310 | 220 | 203
Earnings before income taxes - Non-U.S. |  |  |  |  |  |  |  |  |  | 955 | 976 | 860
Earnings before income taxes and noncontrolling interest |  | $ 475 | $ 273 | $ 255 | $ 262 | $ 267 | $ 283 | $ 314 | $ 332 | 1,265 | 1,196 | 1,063
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  |  | 32 | 17 | 36
State |  |  |  |  |  |  |  |  |  | 4 | 5 | 5
Foreign |  |  |  |  |  |  |  |  |  | 245 | 259 | 247
Total current |  |  |  |  |  |  |  |  |  | 281 | 281 | 288
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  |  | 150 | (40) | 324
State |  |  |  |  |  |  |  |  |  | 23 | (8) | 2
Foreign |  |  |  |  |  |  |  |  |  | 14 | (22) | (34)
Total deferred |  |  |  |  |  |  |  |  |  | 187 | (70) | 292
Provision for income taxes |  | 238 | $ 66 | $ 73 | $ 91 | 19 | 67 | 30 | $ 95 | $ 468 | $ 211 | $ 580
Effective tax rate |  |  |  |  |  |  |  |  |  | 37.00% | 17.70% | 54.70%
U.S. Federal Corporate Tax Rate prior to the Tax Cuts and Jobs Act |  |  |  |  |  |  |  |  |  |  |  | 35.00%
U.S. Federal Corporate Tax Rate After the Tax Cuts and Jobs Act |  |  |  |  |  |  |  |  |  |  | 21.00% |
Tax reform adjustments to provision for income taxes |  |  |  |  |  |  |  |  |  | $ 16 | $ (13) | $ 274
Income tax expense, revaluation of deferred tax assets and liabilities due to change of tax law |  |  |  |  |  |  |  |  |  |  |  | 75
Income tax expense related to executive compensation due to change of tax law |  |  |  |  |  |  |  |  |  |  |  | 11
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability |  |  |  |  |  |  |  |  |  |  |  | 105
Increase of deferred tax liabilities, future remittance of foreign earnings, due to the Act |  |  |  |  |  |  |  |  |  |  |  | $ 94
Increase (decrease) in deferred tax assets due to final SAB 118 adjustments |  |  |  |  |  |  |  |  |  |  | 13 |
Increase (decrease) in deferred tax assets, executive compensation, final SAB 118 adjustments |  |  |  |  |  |  |  |  |  |  | 9 |
Income tax expense, one-time transition tax measurement period adjustment due to change of tax law |  |  |  |  |  |  |  |  |  |  | 8 |
Decrease in deferred tax liability, indefinite reinvestment assertion, measurement period adjustments due to change of law |  |  |  |  |  |  |  |  |  |  | 7 |
Effective rate reconciliation measurement period adjustments due to the Tax Act |  |  |  |  |  | $ (7) | $ 7 | $ 13 |  |  | $ 13 |
Tax expense on net remittance of foreign earnings |  |  |  |  |  |  |  |  |  | 22 |  |
Undistributed Earnings of Foreign Subsidiaries |  | 400 |  |  |  |  |  |  |  | 400 |  |
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries |  | $ 20 |  |  |  |  |  |  |  | $ 20 |  |
BorgWarner Morse TEC LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Tax expense on derecognition of subsidiary | $ 173 |  |  |  |  |  |  |  |  |  |  |

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