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Automotive and GM Financial Debt Other Disclosures (Details) € in Millions, $ in Millions | 1 Months Ended | 6 Months Ended | 7 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 31, 2016 USD ($) | Jun. 30, 2016 USD ($) | Jul. 31, 2016 USD ($) | May 31, 2016 EUR (€) | Apr. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Feb. 29, 2016 USD ($)
Automotive [Member] | Unsecured Debt [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Number of Credit Facilities | 2 |  |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | Revolving Credit Facility October 2014 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 12,500 |  |
Automotive [Member] | Unsecured Debt [Member] | Revolving Credit Facility May 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 14,500 |  |  |  |  |  |
Debt Covenant Minimum Liquidity Requirement | 4,000 |  |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | Revolving Credit Facility May 2016 [Member] | U.S. |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Covenant Minimum Liquidity Requirement | $ 2,000 |  |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | Revolving Credit Facility May 2016 [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Number of agencies needed to maintain investment grade rating | 2 |  |  | 2 |  |  |
Automotive [Member] | Unsecured Debt [Member] | Three-year Revolving Credit Facility May 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 4,000 |  |  |  |  |  |
Debt Instrument, Term | 3 years |  |  |  |  |  |
Sublimit Available for Issuance of Letters of Credit | $ 1,000 |  |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | Five-year Revolving Credit Facility May 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 10,500 |  |  |  |  |  |
Debt Instrument, Term | 5 years |  |  |  |  |  |
Sublimit Available for Issuance of Letters of Credit | $ 500 |  |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | Senior Notes Issued February 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 2,000
Automotive [Member] | Unsecured Debt [Member] | Senior Notes 2036 at 6.60% [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 1,250
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 6.60%
Debt Instrument, Maturity Date |  | Dec. 31, 2036 |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | Senior Notes 2046 at 6.75% [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 750
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 6.75%
Debt Instrument, Maturity Date |  | Dec. 31, 2046 |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | GM Financial Segment [Member] | Three-year Revolving Credit Facility May 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Sublimit Available to GM Financial | 1,000 |  |  |  |  |  |
Automotive [Member] | Unsecured Debt [Member] | GM Financial Segment [Member] | Five-year Revolving Credit Facility May 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Sublimit Available to GM Financial | 3,000 |  |  |  |  |  |
GM Financial [Member] | Secured Debt [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line Of Credit Increase Maximum Borrowing Capacity |  | $ 2,500 |  |  |  |  |
GM Financial [Member] | Secured Debt [Member] | Securitization notes payable [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Securitization Notes Payable Issued |  | 8,400 |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | GERMANY |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Deposits |  | $ 1,800 |  |  |  |  |
Overnight Deposits, Percentage of Total Deposits |  | 36.00% |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes Issued March 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 2,750 |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes March 2021 at 4.2% [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 1,500 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 4.20% |
Debt Instrument, Maturity Date |  | Mar. 31, 2021 |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes March 2026 at 5.25% [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 1,250 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 5.25% |
Debt Instrument, Maturity Date |  | Mar. 31, 2026 |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes Issued May 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount | 3,000 |  |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes May 2019 at 2.40% [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 1,400 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.40% |  |  | 2.40% |  |  |
Debt Instrument, Maturity Date |  | May 31, 2019 |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes May 2023 at 3.70% [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 1,200 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.70% |  |  | 3.70% |  |  |
Debt Instrument, Maturity Date |  | May 31, 2023 |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes May 2019 at Floating Rates [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 400 |  |  |  |  |  |
Debt Instrument, Maturity Date |  | May 31, 2019 |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Term Notes May 2020 at 1.168% [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount | € |  |  |  | € 500 |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.168% |  |  | 1.168% |  |  |
Debt Instrument, Maturity Date |  | May 31, 2020 |  |  |  |  |
GM Financial [Member] | Unsecured Debt [Member] | Senior Notes July 2021 at 3.2% [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 2,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 3.20% |  |  |  |
Debt Instrument, Maturity Date |  |  | Jul. 31, 2021 |  |  |  |

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