|
Debt ST and LT Debt (Details)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2012
USD ($)
|
Jun. 30, 2011
USD ($)
|
Jun. 30, 2012
USD ($)
|
Jun. 30, 2011
USD ($)
|
Dec. 31, 2011
USD ($)
|
Mar. 31, 2012
Automotive [Member]
USD ($)
|
Jun. 30, 2012
Automotive [Member]
USD ($)
|
Dec. 31, 2011
Automotive [Member]
USD ($)
|
Jun. 30, 2012
Automotive [Member]
Level 2 [Member]
USD ($)
|
Dec. 31, 2011
Automotive [Member]
Level 2 [Member]
USD ($)
|
Jun. 30, 2012
Automotive [Member]
Level 3 [Member]
USD ($)
|
Dec. 31, 2011
Automotive [Member]
Level 3 [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Medium-Term Note Facility [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Medium-Term Note Facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Sydicated warehouse facility [Member]
USD ($)
|
Mar. 31, 2012
GM Financial [Member]
Sydicated warehouse facility [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Sydicated warehouse facility [Member]
USD ($)
|
Sep. 30, 2012
GM Financial [Member]
Lease funding facility [Member]
|
Sep. 30, 2012
GM Financial [Member]
Lease funding facility [Member]
CAD
|
Jun. 30, 2012
GM Financial [Member]
Lease funding facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Lease funding facility [Member]
CAD
|
Dec. 31, 2011
GM Financial [Member]
Lease funding facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Bank Funding Facility [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Bank Funding Facility [Member]
USD ($)
|
Mar. 31, 2012
GM Financial [Member]
US Lease Warehouse Facility [Member]
|
Jun. 30, 2012
GM Financial [Member]
US Lease Warehouse Facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Other securitization notes payable [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Other securitization notes payable [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Private securitization [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Level 1 [Member]
Other securitization notes payable [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Level 1 [Member]
Other securitization notes payable [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Level 2 [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Level 2 [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Level 2 [Member]
Sydicated warehouse facility [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Level 2 [Member]
Sydicated warehouse facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Level 2 [Member]
Lease funding facility [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Level 2 [Member]
Lease funding facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Level 2 [Member]
Bank Funding Facility [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Level 2 [Member]
Bank Funding Facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Level 3 [Member]
Medium-Term Note Facility [Member]
USD ($)
|
Dec. 31, 2011
GM Financial [Member]
Level 3 [Member]
Medium-Term Note Facility [Member]
USD ($)
|
Jun. 30, 2012
GM Financial [Member]
Level 3 [Member]
Private securitization [Member]
USD ($)
|
|
| Short term and long term debt [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||
| Short-term debt and current portion of long-term debt | $ 1,360 | $ 1,682 | $ 3,732 | $ 4,118 | ||||||||||||||||||||||||||||||||||||||||
| Long-term debt | 3,783 | 3,613 | 5,918 | 4,420 | ||||||||||||||||||||||||||||||||||||||||
| Total Debt | 5,143 | 5,295 | 9,650 | 8,538 | ||||||||||||||||||||||||||||||||||||||||
| Debt, fair value | 5,649 | 5,467 | 4,400 | 4,000 | 1,200 | 1,100 | 9,799 | 8,556 | ||||||||||||||||||||||||||||||||||||
| Repayments of Debt | 39 | |||||||||||||||||||||||||||||||||||||||||||
| Extinguishment of Debt, Amount | 21 | |||||||||||||||||||||||||||||||||||||||||||
| Gains (Losses) on Extinguishment of Debt | 0 | (10) | (18) | (10) | (18) | 0 | ||||||||||||||||||||||||||||||||||||||
| Credit facilities, carrying amount | 523 | 1,099 | 215 | 294 | 0 | 621 | 308 | 314 | 181 | 0 | 3 | 0 | ||||||||||||||||||||||||||||||||
| Credit facilities, fair value | 524 | 1,099 | 0 | 621 | 308 | 181 | 0 | 3 | 216 | 294 | ||||||||||||||||||||||||||||||||||
| Securitized Notes Payable, Carrying Amount | 8,626 | 6,938 | 7,986 | 6,938 | 640 | |||||||||||||||||||||||||||||||||||||||
| Securitization notes payable, fair value | 8,731 | 6,946 | 8,081 | 6,946 | 650 | |||||||||||||||||||||||||||||||||||||||
| Senior notes and convertible senior notes | 501 | 501 | ||||||||||||||||||||||||||||||||||||||||||
| Senior notes and convertible senior notes, fair value | 544 | 511 | ||||||||||||||||||||||||||||||||||||||||||
| Facility Amount | 2,500 | 2,000 | 800 | 589 | 600 | 600 | ||||||||||||||||||||||||||||||||||||||
| Assets Pledged as Collateral | 197 | 197 | 209 | 714 | 236 | 0 | 478 | 0 | ||||||||||||||||||||||||||||||||||||
| Restricted Cash Pledged | 86 | 84 | 0 | 2 | 0 | |||||||||||||||||||||||||||||||||||||||
| Cash Collected on Finance Receivables Pledged | $ 29 | |||||||||||||||||||||||||||||||||||||||||||
| Line of Credit Facility, Expiration Date | October 2016 | May 2013 | July 2013 | July 2013 | January 2013 | |||||||||||||||||||||||||||||||||||||||