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v3.21.1

Restructuring and Other Initiatives (Details) - USD ($) $ in Millions | 3 Months Ended | 15 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2021
Restructuring Reserve [Roll Forward] |  |  |
Balance at beginning of period | $ 352 | $ 564 | $ 564
Additions, interest accretion and other | 3 | 219 |
Payments | (79) | (175) |
Revisions to estimates and effect of foreign currency | (1) | (25) |
Balance at end of period | $ 275 | 583 | 275
GMI | Australia, New Zealand, Thailand and India |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Pre-tax restructuring charges |  |  | 687
GMI | Australia, New Zealand, Thailand and India | Dealer Restructuring and Employee Separation Payments |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Payments |  |  | (221)
GMI | Australia, New Zealand and Thailand |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Pre-tax restructuring charges |  | 489 |
GMI | Australia, New Zealand and Thailand | Asset Impairments, Sales Allowances, Inventory Provisions and Other Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Pre-tax restructuring charges |  | 270 |
GMI | Australia, New Zealand and Thailand | Dealer Restructuring and Employee Separation Payments |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Pre-tax restructuring charges |  | 219 |
GMI | Australia and New Zealand |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Valuation allowance against deferred tax assets |  | $ 236 |
GMI | Thailand |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Proceeds from sale of business |  |  | $ 143

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