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Restructuring and Other Initiatives (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 USD ($) employee | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) employee | Jun. 30, 2016 USD ($)
Restructuring Reserve [Roll Forward] |  |  |  |
Balance at beginning of period | $ 296 | $ 606 | $ 268 | $ 383
Additions, interest accretion and other | 250 | 40 | 290 | 340
Payments | (53) | (311) | (75) | (405)
Revisions to estimates and effect of foreign currency | 0 | (2) | 10 | 15
Balance at end of period | 493 | 333 | 493 | 333
GMIO [Member] | Separation Programs In South Africa And India [Member] |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Pre-tax restructuring costs | 460 |  | 460 |
GMIO [Member] | Separation Programs In South Africa And India [Member] | Asset Impairments, Sales Incentives, Inventory Provisions and Other Restructuring Costs [Member] |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Pre-tax restructuring costs | 297 |  |  |
GMIO [Member] | Separation Programs In South Africa And India [Member] | Dealer Restructuring, Employee Severance and Contract Termination Costs [Member] |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Pre-tax restructuring costs | 163 |  |  |
GMIO [Member] | Separation Programs in Australia, Korea and Chevrolet Europe [Member] |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Total cost incurred to date | $ 866 |  | $ 866 |
Employees affected | employee | 4,690 |  | 4,690 |
GMNA [Member] | Cash Severance Incentive Programs [Member] |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Additions, interest accretion and other |  | $ 240 |  | $ 240

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