XML 143 R2.htm IDEA: XBRL DOCUMENT
v3.23.1

Pay vs Performance Disclosure - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure [Table] |  |  |
Pay vs Performance [Table Text Block] | Pay Versus Performance Pursuant to Item 402(v) of Regulation S-K, we are providing the following information about the relationship between CAP for the Company’s CEO and non-CEO NEOs and certain aspects of the financial performance of the Company. The CAP values disclosed do not reflect the actual amount of compensation paid to our NEOs during the applicable year. The Compensation Committee does not utilize CAP as a basis for making compensation decisions. For information regarding compensation decisions made by our Compensation Committee, refer to the “Compensation Discussion and An alysis ” section beginning on page 51 .
Year |  | Summary Compensation Table Total for CEO (1) ($) |  |  | CAP to CEO (3) ($) |  |  | Average Summary Compensation Table Total for Non-CEO NEOs (2) ($) |  |  | Average CAP to Non-CEO NEOs (3) ($) |  |  |  |  |  | Value of Initial Fixed $100 Investment Based On: |  |  |  |  | Net Income (6) ($B) |  |  | EBIT- adjusted (7) ($B) |
|  |  |  | TSR (4) ($) |  | Peer Group TSR (5) ($) |  |  |
2022 |  |  | 28,979,570 |  |  |  | (16,991,516) |  |  |  | 10,539,930 |  |  |  | (2,724,335) |  |  |  |  |  |  | 94 |  | 128 |  |  |  |  |  |  | 9.708 |  |  |  | 14.474 |
2021 |  |  | 29,136,780 |  |  |  | 76,096,506 |  |  |  | 9,982,519 |  |  |  | 19,443,928 |  |  |  |  |  |  | 164 |  | 188 |  |  |  |  |  |  | 9.945 |  |  |  | 14.295 |
2020 |  |  | 23,657,987 |  |  |  | 45,185,399 |  |  |  | 6,632,869 |  |  |  | 5,817,820 |  |  |  |  |  |  | 116 |  | 151 |  |  |  |  |  |  | 6.321 |  |  |  | 9.710 |
(1) | Ms. Barra served as our CEO in 2022, 2021, and 2020.
(2) | Non-CEO NEOs in 2022 and 2021 included Messrs. Jacobson, Reuss, Parks, and Carlisle. Non-CEO NEOs in 2020 included Messrs. Jacobson, Reuss, Parks, and Carlisle, Ms. Dhivya Suryadevara (Former Executive Vice President and Chief Financial Officer), Mr. John Stapleton (Vice President and Chief Financial Officer, North America and Former Acting Chief Financial Officer), and Mr. Barry Engle (Former Executive Vice President and President, North America).
(3) | Reflects CAP values computed in accordance with Item 402(v) of Regulation S-K and FASB ASC Topic 718.
|  | 2022 |  |  |  |  |  | 2021 |  |  |  |  |  | 2020 |
|  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |
SCT Total |  |  | 28,979,570 |  |  |  | 10,539,930 |  |  |  |  |  |  |  | 29,136,780 |  |  |  | 9,982,519 |  |  |  |  |  |  |  | 23,657,987 |  |  |  | 6,632,869 |
Less: Change in Actuarial Present Value Reported in the “Change in Pension Value and NQ Deferred Compensation Earnings” Column of the SCT |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | (423,608 | ) |  |  | (141,675 | )
Plus: Service Cost for Pension Plans |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | 149 |
Less: Amount Reported in the “Stock Awards” Column of the SCT |  |  | (14,625,000 | ) |  |  | (5,470,294 | ) |  |  |  |  |  |  | (14,582,198 | ) |  |  | (5,069,059 | ) |  |  |  |  |  |  | (13,093,722 | ) |  |  | (3,793,686 | )
Plus: Year-end Fair Value of Outstanding and Unvested Stock Awards Granted in the Covered Year |  |  | 8,629,590 |  |  |  | 3,227,799 |  |  |  |  |  |  |  | 18,914,281 |  |  |  | 6,574,982 |  |  |  |  |  |  |  | 18,050,565 |  |  |  | 3,545,877 |
Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Years |  |  | (25,258,220 | ) |  |  | (7,683,634 | ) |  |  |  |  |  |  | 25,646,494 |  |  |  | 5,307,302 |  |  |  |  |  |  |  | 10,087,483 |  |  |  | 768,879 |
Change in Fair Value of Stock Awards that Vested in the Covered Year |  |  | (4,942,601 | ) |  |  | (732,230 | ) |  |  |  |  |  |  | 5,626,432 |  |  |  | 646,960 |  |  |  |  |  |  |  | (847,866 | ) |  |  | (1,522 | )
Less: Fair Value of Stock Awards Forfeited During the Covered Year |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | (1,617,289 | )
Less: Amount Reported in the “Option Awards” Column of the SCT |  |  | (4,875,010 | ) |  |  | (1,823,438 | ) |  |  |  |  |  |  | (3,937,507 | ) |  |  | (1,368,752 | ) |  |  |  |  |  |  | (3,750,002 | ) |  |  | (974,378 | )
Plus: Year-end Fair Value of Outstanding and Unvested Option Awards Granted in the Covered Year |  |  | 2,584,980 |  |  |  | 966,880 |  |  |  |  |  |  |  | 3,694,210 |  |  |  | 1,284,177 |  |  |  |  |  |  |  | 10,379,470 |  |  |  | 1,434,466 |
Change in Fair Value of Outstanding and Unvested Option Awards Granted in Prior Years |  |  | (5,055,582 | ) |  |  | (1,267,702 | ) |  |  |  |  |  |  | 6,628,520 |  |  |  | 1,281,139 |  |  |  |  |  |  |  | 2,881,004 |  |  |  | 231,707 |
|  | 2022 |  |  |  |  |  | 2021 |  |  |  |  |  | 2020 |
|  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |
Change in Fair Value of Option Awards that Vested in the Covered Year |  |  | (2,429,243 | ) |  |  | (481,646 | ) |  |  |  |  |  |  | 4,969,494 |  |  |  | 804,660 |  |  |  |  |  |  |  | (1,755,912 | ) |  |  | (177,797 | )
Less: Fair Value of Option Awards Forfeited During the Covered Year |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | (89,780 | )
CAP Total |  |  | (16,991,516 | ) |  |  | (2,724,335 | ) |  |  |  |  |  |  | 76,096,506 |  |  |  | 19,443,928 |  |  |  |  |  |  |  | 45,185,399 |  |  |  | 5,817,820 |
(4) | Represents the cumulative TSR of the Company of an initial investment of $100 for the measurement period beginning December 31, 2019, and ending December 31, 2022, 2021, or 2020, respectively, calculated in accordance with Item 201(e) of Regulation S-K as required under Item 402(v) of Regulation S-K.
(5) | Represents the cumulative TSR of the Dow Jones Automobiles & Parts Titans 30 Index (the “Peer Group TSR”) of an initial investment of $100 for the measurement period beginning December 31, 2019, and ending December 31, 2022, 2021, or 2020, respectively, calculated in accordance with Item 201(e) of Regulation S-K as required under Item 402(v) of Regulation S-K.
(6) | Reflects net income as shown in the Company’s Annual Report on Form 10-K for the years ended December 31, 2022, 2021, and 2020.
(7) | Reflects EBIT-adjusted, the company-selected measure for 2022, as shown in the Company’s Annual Report on Form 10-K for the years ended December 31, 2022, 2021, and 2020. Refer to Appendix A for a reconciliation of EBIT-adjusted to its closest comparable GAAP measure. Please note EBIT-adjusted may not have been the company-selected measure for 2021 and 2020, and we may determine a different measure to be the company-selected measure in future years.
Company Selected Measure Name | EBIT-adjusted |  |
Named Executive Officers, Footnote [Text Block] | Non-CEO NEOs in 2022 and 2021 included Messrs. Jacobson, Reuss, Parks, and Carlisle. Non-CEO NEOs in 2020 included Messrs. Jacobson, Reuss, Parks, and Carlisle, Ms. Dhivya Suryadevara (Former Executive Vice President and Chief Financial Officer), Mr. John Stapleton (Vice President and Chief Financial Officer, North America and Former Acting Chief Financial Officer), and Mr. Barry Engle (Former Executive Vice President and President, North America). |  |
Peer Group Issuers, Footnote [Text Block] | Represents the cumulative TSR of the Dow Jones Automobiles & Parts Titans 30 Index (the “Peer Group TSR”) of an initial investment of $100 for the measurement period beginning December 31, 2019, and ending December 31, 2022, 2021, or 2020, respectively, calculated in accordance with Item 201(e) of Regulation S-K as required under Item 402(v) of Regulation S-K. |  |
PEO Total Compensation Amount | $ 28,979,570 | $ 29,136,780 | $ 23,657,987
PEO Actually Paid Compensation Amount | $ (16,991,516) | 76,096,506 | 45,185,399
Adjustment To PEO Compensation, Footnote [Text Block] |
(3) | Reflects CAP values computed in accordance with Item 402(v) of Regulation S-K and FASB ASC Topic 718.
|  | 2022 |  |  |  |  |  | 2021 |  |  |  |  |  | 2020 |
|  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |
SCT Total |  |  | 28,979,570 |  |  |  | 10,539,930 |  |  |  |  |  |  |  | 29,136,780 |  |  |  | 9,982,519 |  |  |  |  |  |  |  | 23,657,987 |  |  |  | 6,632,869 |
Less: Change in Actuarial Present Value Reported in the “Change in Pension Value and NQ Deferred Compensation Earnings” Column of the SCT |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | (423,608 | ) |  |  | (141,675 | )
Plus: Service Cost for Pension Plans |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | 149 |
Less: Amount Reported in the “Stock Awards” Column of the SCT |  |  | (14,625,000 | ) |  |  | (5,470,294 | ) |  |  |  |  |  |  | (14,582,198 | ) |  |  | (5,069,059 | ) |  |  |  |  |  |  | (13,093,722 | ) |  |  | (3,793,686 | )
Plus: Year-end Fair Value of Outstanding and Unvested Stock Awards Granted in the Covered Year |  |  | 8,629,590 |  |  |  | 3,227,799 |  |  |  |  |  |  |  | 18,914,281 |  |  |  | 6,574,982 |  |  |  |  |  |  |  | 18,050,565 |  |  |  | 3,545,877 |
Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Years |  |  | (25,258,220 | ) |  |  | (7,683,634 | ) |  |  |  |  |  |  | 25,646,494 |  |  |  | 5,307,302 |  |  |  |  |  |  |  | 10,087,483 |  |  |  | 768,879 |
Change in Fair Value of Stock Awards that Vested in the Covered Year |  |  | (4,942,601 | ) |  |  | (732,230 | ) |  |  |  |  |  |  | 5,626,432 |  |  |  | 646,960 |  |  |  |  |  |  |  | (847,866 | ) |  |  | (1,522 | )
Less: Fair Value of Stock Awards Forfeited During the Covered Year |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | (1,617,289 | )
Less: Amount Reported in the “Option Awards” Column of the SCT |  |  | (4,875,010 | ) |  |  | (1,823,438 | ) |  |  |  |  |  |  | (3,937,507 | ) |  |  | (1,368,752 | ) |  |  |  |  |  |  | (3,750,002 | ) |  |  | (974,378 | )
Plus: Year-end Fair Value of Outstanding and Unvested Option Awards Granted in the Covered Year |  |  | 2,584,980 |  |  |  | 966,880 |  |  |  |  |  |  |  | 3,694,210 |  |  |  | 1,284,177 |  |  |  |  |  |  |  | 10,379,470 |  |  |  | 1,434,466 |
Change in Fair Value of Outstanding and Unvested Option Awards Granted in Prior Years |  |  | (5,055,582 | ) |  |  | (1,267,702 | ) |  |  |  |  |  |  | 6,628,520 |  |  |  | 1,281,139 |  |  |  |  |  |  |  | 2,881,004 |  |  |  | 231,707 |
|  | 2022 |  |  |  |  |  | 2021 |  |  |  |  |  | 2020 |
|  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |
Change in Fair Value of Option Awards that Vested in the Covered Year |  |  | (2,429,243 | ) |  |  | (481,646 | ) |  |  |  |  |  |  | 4,969,494 |  |  |  | 804,660 |  |  |  |  |  |  |  | (1,755,912 | ) |  |  | (177,797 | )
Less: Fair Value of Option Awards Forfeited During the Covered Year |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | (89,780 | )
CAP Total |  |  | (16,991,516 | ) |  |  | (2,724,335 | ) |  |  |  |  |  |  | 76,096,506 |  |  |  | 19,443,928 |  |  |  |  |  |  |  | 45,185,399 |  |  |  | 5,817,820 |
Non-PEO NEO Average Total Compensation Amount | $ 10,539,930 | 9,982,519 | 6,632,869
Non-PEO NEO Average Compensation Actually Paid Amount | $ (2,724,335) | 19,443,928 | 5,817,820
Adjustment to Non-PEO NEO Compensation Footnote [Text Block] |
(3) | Reflects CAP values computed in accordance with Item 402(v) of Regulation S-K and FASB ASC Topic 718.
|  | 2022 |  |  |  |  |  | 2021 |  |  |  |  |  | 2020 |
|  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |
SCT Total |  |  | 28,979,570 |  |  |  | 10,539,930 |  |  |  |  |  |  |  | 29,136,780 |  |  |  | 9,982,519 |  |  |  |  |  |  |  | 23,657,987 |  |  |  | 6,632,869 |
Less: Change in Actuarial Present Value Reported in the “Change in Pension Value and NQ Deferred Compensation Earnings” Column of the SCT |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | (423,608 | ) |  |  | (141,675 | )
Plus: Service Cost for Pension Plans |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | 149 |
Less: Amount Reported in the “Stock Awards” Column of the SCT |  |  | (14,625,000 | ) |  |  | (5,470,294 | ) |  |  |  |  |  |  | (14,582,198 | ) |  |  | (5,069,059 | ) |  |  |  |  |  |  | (13,093,722 | ) |  |  | (3,793,686 | )
Plus: Year-end Fair Value of Outstanding and Unvested Stock Awards Granted in the Covered Year |  |  | 8,629,590 |  |  |  | 3,227,799 |  |  |  |  |  |  |  | 18,914,281 |  |  |  | 6,574,982 |  |  |  |  |  |  |  | 18,050,565 |  |  |  | 3,545,877 |
Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Years |  |  | (25,258,220 | ) |  |  | (7,683,634 | ) |  |  |  |  |  |  | 25,646,494 |  |  |  | 5,307,302 |  |  |  |  |  |  |  | 10,087,483 |  |  |  | 768,879 |
Change in Fair Value of Stock Awards that Vested in the Covered Year |  |  | (4,942,601 | ) |  |  | (732,230 | ) |  |  |  |  |  |  | 5,626,432 |  |  |  | 646,960 |  |  |  |  |  |  |  | (847,866 | ) |  |  | (1,522 | )
Less: Fair Value of Stock Awards Forfeited During the Covered Year |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | (1,617,289 | )
Less: Amount Reported in the “Option Awards” Column of the SCT |  |  | (4,875,010 | ) |  |  | (1,823,438 | ) |  |  |  |  |  |  | (3,937,507 | ) |  |  | (1,368,752 | ) |  |  |  |  |  |  | (3,750,002 | ) |  |  | (974,378 | )
Plus: Year-end Fair Value of Outstanding and Unvested Option Awards Granted in the Covered Year |  |  | 2,584,980 |  |  |  | 966,880 |  |  |  |  |  |  |  | 3,694,210 |  |  |  | 1,284,177 |  |  |  |  |  |  |  | 10,379,470 |  |  |  | 1,434,466 |
Change in Fair Value of Outstanding and Unvested Option Awards Granted in Prior Years |  |  | (5,055,582 | ) |  |  | (1,267,702 | ) |  |  |  |  |  |  | 6,628,520 |  |  |  | 1,281,139 |  |  |  |  |  |  |  | 2,881,004 |  |  |  | 231,707 |
|  | 2022 |  |  |  |  |  | 2021 |  |  |  |  |  | 2020 |
|  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |  |  |  |  |  | CEO |  |  | Average Non-CEO NEOs |
Change in Fair Value of Option Awards that Vested in the Covered Year |  |  | (2,429,243 | ) |  |  | (481,646 | ) |  |  |  |  |  |  | 4,969,494 |  |  |  | 804,660 |  |  |  |  |  |  |  | (1,755,912 | ) |  |  | (177,797 | )
Less: Fair Value of Option Awards Forfeited During the Covered Year |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | (89,780 | )
CAP Total |  |  | (16,991,516 | ) |  |  | (2,724,335 | ) |  |  |  |  |  |  | 76,096,506 |  |  |  | 19,443,928 |  |  |  |  |  |  |  | 45,185,399 |  |  |  | 5,817,820 |
Compensation Actually Paid vs. Total Shareholder Return [Text Block] |  |  |
Compensation Actually Paid vs. Net Income [Text Block] |  |  |
Compensation Actually Paid vs. Company Selected Measure [Text Block] |  |  |
Total Shareholder Return Vs Peer Group [Text Block] |  |  |
Tabular List [Table Text Block] |
Tabular List of Most-Important Measures
EBIT-adjusted
EBIT-adjusted Margin
Relative TSR
Total Shareholder Return Amount | $ 94 | 164 | 116
Peer Group Total Shareholder Return Amount | 128 | 188 | 151
Net Income (Loss) | $ 9,708,000,000 | $ 9,945,000,000 | $ 6,321,000,000
Company Selected Measure Amount | 14,474,000,000 | 14,295,000,000 | 9,710,000,000
PEO Name | Ms. Barra |  |
Measure [Axis]: 1 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | EBIT-adjusted |  |
Measure [Axis]: 2 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | EBIT-adjusted Margin |  |
Measure [Axis]: 3 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Relative TSR |  |
PEO [Member] | Change in Fair Value of Option Awards that Vested in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ (2,429,243) | $ 4,969,494 | $ (1,755,912)
PEO [Member] | Change in Fair Value of Outstanding and Unvested Option Awards Granted in Prior Years [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (5,055,582) | 6,628,520 | 2,881,004
PEO [Member] | Yearend Fair Value of Outstanding and Unvested Option Awards Granted in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 2,584,980 | 3,694,210 | 10,379,470
PEO [Member] | Amount Reported in the Option Awards Column of the SCT [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (4,875,010) | (3,937,507) | (3,750,002)
PEO [Member] | Change in Fair Value of Stock Awards that Vested in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (4,942,601) | 5,626,432 | (847,866)
PEO [Member] | Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Years [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (25,258,220) | 25,646,494 | 10,087,483
PEO [Member] | Yearend Fair Value of Outstanding and Unvested Stock Awards Granted in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 8,629,590 | 18,914,281 | 18,050,565
PEO [Member] | Amount Reported in the Stock Awards Column of the SCT [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (14,625,000) | (14,582,198) | (13,093,722)
PEO [Member] | Change in Actuarial Present Value Reported in the Change in Pension Value and NQ Deferred Compensation Earnings Column of the SCT [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  |  | (423,608)
Non-PEO NEO [Member] | Fair Value of Option Awards Forfeited During the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  |  | (89,780)
Non-PEO NEO [Member] | Change in Fair Value of Option Awards that Vested in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (481,646) | 804,660 | (177,797)
Non-PEO NEO [Member] | Change in Fair Value of Outstanding and Unvested Option Awards Granted in Prior Years [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (1,267,702) | 1,281,139 | 231,707
Non-PEO NEO [Member] | Yearend Fair Value of Outstanding and Unvested Option Awards Granted in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 966,880 | 1,284,177 | 1,434,466
Non-PEO NEO [Member] | Amount Reported in the Option Awards Column of the SCT [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (1,823,438) | (1,368,752) | (974,378)
Non-PEO NEO [Member] | Fair Value of Stock Awards Forfeited During the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  |  | (1,617,289)
Non-PEO NEO [Member] | Change in Fair Value of Stock Awards that Vested in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (732,230) | 646,960 | (1,522)
Non-PEO NEO [Member] | Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Years [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (7,683,634) | 5,307,302 | 768,879
Non-PEO NEO [Member] | Yearend Fair Value of Outstanding and Unvested Stock Awards Granted in the Covered Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 3,227,799 | 6,574,982 | 3,545,877
Non-PEO NEO [Member] | Amount Reported in the Stock Awards Column of the SCT [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ (5,470,294) | $ (5,069,059) | (3,793,686)
Non-PEO NEO [Member] | Service Cost for Pension Plans [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  |  | 149
Non-PEO NEO [Member] | Change in Actuarial Present Value Reported in the Change in Pension Value and NQ Deferred Compensation Earnings Column of the SCT [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  |  | $ (141,675)

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToNonPeoNeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToPeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph iii + Details
Name: | ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph ii + Details
Name: | ecd_CompActuallyPaidVsNetIncomeTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph i + Details
Name: | ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_MeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_NamedExecutiveOfficersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_NonPeoNeoAvgCompActuallyPaidAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_NonPeoNeoAvgTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupIssuersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupTotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_PeoActuallyPaidCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_PeoName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_PeoTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTable
Namespace Prefix: | ecd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 6 + Details
Name: | ecd_TabularListTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnVsPeerGroupTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22595-107794 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 65 -Paragraph 1 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126732423&loc=SL123482106-238011 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22663-107794 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 17: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126958026&loc=SL5780133-109256 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22658-107794 Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669619-108580 Reference 25: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8924-108599 Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794 Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794 Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760 Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669625-108580 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 34: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ecd_MeasureAxis=1
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=2
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=3
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_PeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_ChangeInFairValueOfOptionAwardsThatVestedInTheCoveredYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_ChangeInFairValueOfOutstandingAndUnvestedOptionAwardsGrantedInPriorYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_YearendFairValueOfOutstandingAndUnvestedOptionAwardsGrantedInTheCoveredYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_AmountReportedInTheoptionAwardsColumnOfTheSctMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_ChangeInFairValueOfStockAwardsThatVestedInTheCoveredYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_ChangeInFairValueOfOutstandingAndUnvestedStockAwardsGrantedInPriorYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_YearendFairValueOfOutstandingAndUnvestedStockAwardsGrantedInTheCoveredYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_AmountReportedInThestockAwardsColumnOfTheSctMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_ChangeInActuarialPresentValueReportedInThechangeInPensionValueAndNqDeferredCompensationEarningsColumnOfTheSctMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_NonPeoNeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_FairValueOfOptionAwardsForfeitedDuringTheCoveredYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_FairValueOfStockAwardsForfeitedDuringTheCoveredYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=gm_ServiceCostForPensionPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |