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Restructuring And Other Initiatives (Details) (USD $)
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3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
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Jun. 30, 2012
employees
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Mar. 31, 2012
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Jun. 30, 2011
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Mar. 31, 2011
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Jun. 30, 2012
employees
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| Restructuring Reserve [Abstract] | |||||
| Restructuring Reserve Beginning Balance | $ 1,444,000,000 | $ 1,584,000,000 | $ 1,613,000,000 | $ 1,802,000,000 | $ 1,584,000,000 |
| Additions | 151,000,000 | 112,000,000 | 71,000,000 | 60,000,000 | |
| Interest accretion and other | 21,000,000 | 24,000,000 | 22,000,000 | 31,000,000 | |
| Payments | (184,000,000) | (286,000,000) | (186,000,000) | (337,000,000) | |
| Revisions to estimates | (7,000,000) | (14,000,000) | (8,000,000) | 7,000,000 | |
| Effect of foreign currency | (33,000,000) | 24,000,000 | 10,000,000 | 50,000,000 | |
| Restructuring Reserve Ending Balance | 1,392,000,000 | 1,444,000,000 | 1,522,000,000 | 1,613,000,000 | 1,392,000,000 |
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GMNA [Member]
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| Restructuring Reserve [Abstract] | |||||
| Restructuring Reserve Beginning Balance | 894,000,000 | 884,000,000 | 1,062,000,000 | 1,135,000,000 | 884,000,000 |
| Additions | 13,000,000 | 97,000,000 | 8,000,000 | 26,000,000 | |
| Interest accretion and other | 3,000,000 | 3,000,000 | 6,000,000 | 7,000,000 | |
| Payments | (123,000,000) | (86,000,000) | (109,000,000) | (129,000,000) | |
| Revisions to estimates | 0 | (12,000,000) | (8,000,000) | 7,000,000 | |
| Effect of foreign currency | (8,000,000) | 8,000,000 | (1,000,000) | 16,000,000 | |
| Restructuring Reserve Ending Balance | 779,000,000 | 894,000,000 | 958,000,000 | 1,062,000,000 | 779,000,000 |
| Remaining Payments Including Temporary Layoffs Benefits | 363,000,000 | 369,000,000 | 363,000,000 | ||
| Restructuring and Related Activities [Abstract] | |||||
| Number of Skilled Hourly Employees | 1,400 | ||||
| Total Cost of Separation Programs | 99,000,000 | ||||
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GMNA [Member] | Dealer Wind-Down [Member]
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| Restructuring Reserve [Abstract] | |||||
| Restructuring Reserve Beginning Balance | 22,000,000 | 25,000,000 | 58,000,000 | 144,000,000 | 25,000,000 |
| Payments | (1,000,000) | (3,000,000) | (24,000,000) | (80,000,000) | |
| Revisions to estimates | (4,000,000) | 0 | (1,000,000) | (6,000,000) | |
| Restructuring Reserve Ending Balance | 17,000,000 | 22,000,000 | 33,000,000 | 58,000,000 | 17,000,000 |
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GME [Member]
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| Restructuring Reserve [Abstract] | |||||
| Restructuring Reserve Beginning Balance | 540,000,000 | 687,000,000 | 550,000,000 | 664,000,000 | 687,000,000 |
| Additions | 38,000,000 | 9,000,000 | 62,000,000 | 33,000,000 | |
| Interest accretion and other | 18,000,000 | 22,000,000 | 16,000,000 | 24,000,000 | |
| Payments | (43,000,000) | (192,000,000) | (76,000,000) | (205,000,000) | |
| Revisions to estimates | (7,000,000) | (2,000,000) | 0 | 0 | |
| Effect of foreign currency | (26,000,000) | 16,000,000 | 11,000,000 | 34,000,000 | |
| Restructuring Reserve Ending Balance | 520,000,000 | 540,000,000 | 563,000,000 | 550,000,000 | 520,000,000 |
| Restructuring and Related Activities [Abstract] | |||||
| Total Cost of Separation Programs | 313,000,000 | ||||
| Additional Cost Expected to Incurr | 100,000,000 | ||||
| Number of Employees Affected | 1,900 | 1,900 | |||
| Number Of Additional Employees Affected | 350 | 350 | |||
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GMIO [Member]
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| Restructuring Reserve [Abstract] | |||||
| Restructuring Reserve Beginning Balance | 4,000,000 | 1,000,000 | 1,000,000 | 3,000,000 | 1,000,000 |
| Additions | 27,000,000 | 4,000,000 | 0 | 0 | |
| Interest accretion and other | 0 | (1,000,000) | 0 | 0 | |
| Payments | (5,000,000) | 0 | 0 | (2,000,000) | |
| Revisions to estimates | 0 | 0 | 0 | 0 | |
| Effect of foreign currency | 0 | 0 | 0 | 0 | |
| Restructuring Reserve Ending Balance | 26,000,000 | 4,000,000 | 1,000,000 | 1,000,000 | 26,000,000 |
| Restructuring and Related Activities [Abstract] | |||||
| Total Cost of Separation Programs | 22,000,000 | ||||
| Number of Employees Affected | 146 | 146 | |||
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GMSA [Member]
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| Restructuring Reserve [Abstract] | |||||
| Restructuring Reserve Beginning Balance | 6,000,000 | 12,000,000 | 0 | 0 | 12,000,000 |
| Additions | 73,000,000 | 2,000,000 | 1,000,000 | 1,000,000 | |
| Interest accretion and other | 0 | 0 | 0 | 0 | |
| Payments | (13,000,000) | (8,000,000) | (1,000,000) | (1,000,000) | |
| Revisions to estimates | 0 | 0 | 0 | 0 | |
| Effect of foreign currency | 1,000,000 | 0 | 0 | 0 | |
| Restructuring Reserve Ending Balance | 67,000,000 | 6,000,000 | 0 | 0 | 67,000,000 |
| Restructuring and Related Activities [Abstract] | |||||
| Total Cost of Separation Programs | $ 71,000,000 | ||||